To Sleep, Perchance to Dream: Crash Course Psychology #9

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  • เผยแพร่เมื่อ 6 มิ.ย. 2024
  • Why do we sleep? Well... that's a tricky question. More easily answered is the question, "How do we sleep?" In this episode of Crash Course Psychology, Hank discusses some of the ways our brain functions when sleeping and how it can malfunction as well.
    Want more videos about psychology? Check out our sister channel SciShow Psych at / scishowpsych !
    --
    Chapters:
    Introduction: What Happens When We're Sleeping? 00:00
    What is sleep and why do we do it? 1:20
    How do we sleep? 1:56
    Rapid Eye Movement (REM) 2:38
    4 Stages of Sleep 3:08
    Sleep Deprivation 4:28
    Sleep Disorders 4:47
    What do we dream about? 6:08
    Why do we dream? 7:26
    Review & Credits 9:46
    --
    Crash Course is on Patreon! You can support us directly by signing up at / crashcourse
    Want to find Crash Course elsewhere on the internet?
    Facebook - / youtubecrashcourse
    Twitter - / thecrashcourse
    Instagram - / thecrashcourse
    CC Kids: / crashcoursekids

ความคิดเห็น • 2.1K

  • @Katie__17
    @Katie__17 4 ปีที่แล้ว +1864

    Hank: "sleep is important"
    Me, at nearly 2am, working on a presentation: "sleep is for the weak"

    • @adelezhang9513
      @adelezhang9513 4 ปีที่แล้ว +40

      Me, as an Chinese AP student staying up late and dealing with the jet lag: “sleep is for the weak cuz CB forces me to take the freaking psychology exam at 2am.” Lol

    • @Katie__17
      @Katie__17 4 ปีที่แล้ว +17

      @@adelezhang9513 Oh man, that's crazy...good luck on your AP exam though!

    • @adelezhang9513
      @adelezhang9513 4 ปีที่แล้ว +10

      haha thx!

    • @adamdeford846
      @adamdeford846 4 ปีที่แล้ว +2

      So true.

  • @atcslay5140
    @atcslay5140 9 ปีที่แล้ว +3700

    I learn way more from this guy in 10 mims than I do from all my teachers In week

    • @eonorez3
      @eonorez3 9 ปีที่แล้ว +94

      ATC Slay
      The guy summarized an entire chapter in psychology textbook in 10 minutes. Impressive stuff.

    • @imneverawake8105
      @imneverawake8105 8 ปีที่แล้ว +23

      +eonorez3 you gotta rewatch or take notes so it can all seep in though.

    • @babycriis2287
      @babycriis2287 7 ปีที่แล้ว +1

      Neew Reseeeeaarcccch: “Outsmaart Insomniaaaa” Cure => twitter.com/1841b0b077b2c9b36/status/822777083591999489

    • @thenormanator5289
      @thenormanator5289 7 ปีที่แล้ว +4

      ATC Slay Yet you still can't spell "minute" right.

    • @rachelmccray6043
      @rachelmccray6043 7 ปีที่แล้ว +2

      ATC Slay Amen!

  • @eileenbraswell3791
    @eileenbraswell3791 4 ปีที่แล้ว +302

    Video: *starts talking about dreams*
    Me: “Close your eyes, shut your mouth, dream a dream and get us out. Dream dream dream dream dream dream”

    • @luciencopeland2545
      @luciencopeland2545 4 ปีที่แล้ว +22

      THIS SONG. I READ IT IN BABY LAUTNER'S VOICE

  • @miria4157
    @miria4157 9 ปีที่แล้ว +943

    I dreamt of falling asleep once.

    • @anonanon4260
      @anonanon4260 9 ปีที่แล้ว +4

      Aria MISSY :l same

    • @miria4157
      @miria4157 9 ปีที่แล้ว +6

      Cole Tyndall
      haha glad I'm not the only one

    • @anonanon4260
      @anonanon4260 9 ปีที่แล้ว +2

      :I

    • @miria4157
      @miria4157 9 ปีที่แล้ว +2

      *****
      at one time yes

    • @superhyperyoshi
      @superhyperyoshi 9 ปีที่แล้ว +56

      One time I had a dream within a dream within a dream within a dream and every time I "woke up" in these dreams they became more and more realistic until I actually woke up.

  • @miguelrothe6943
    @miguelrothe6943 10 ปีที่แล้ว +148

    After being raised by a psychiatrist my whole life I have started breaking the fourth wall in my own dreams when they get ridiculously psychologically heavy-handed (which is often). One time I dreamed I was a kid in the back seat of a car and the driver disappeared and I just went, "Screw this, I am too old for latent abandonment issues", and woke myself up by crashing.

  • @Justin_GFM
    @Justin_GFM 8 ปีที่แล้ว +770

    Does anybody else have dreams about stuff that ACTUALLY happens later on during the day? Like for example, you dream about a fight happing during 5th period lunch. Then when 5th period rolls along, french fies and barbecue sauce and burgers and honey mustard and blood start flying everywhere, and you think,"Wait, I had a dream about this!"

    • @aaronjackson6880
      @aaronjackson6880 6 ปีที่แล้ว +63

      Justin yes not as often as used to, but at one point it was almost every day, and would always end when I tried to listen to cobersations
      Edit:this comment is late

    • @johannanichols5853
      @johannanichols5853 5 ปีที่แล้ว +24

      I do but I have a sixth sense that semi-predicts things in general, though.

    • @mykealahassinger8556
      @mykealahassinger8556 5 ปีที่แล้ว +52

      I think its called dejavu

    • @handsome_hunter1364
      @handsome_hunter1364 5 ปีที่แล้ว +9

      Hell yes... I don't know what's that but i often get those dreams or thoughts that yeah I have faced the same in my dreams or in real I don't know... Wht if j can see my future .. lol 😁

    • @yvyrose195
      @yvyrose195 5 ปีที่แล้ว +3

      Yes I did.

  • @ws6778
    @ws6778 ปีที่แล้ว +10

    They only forgot to mention the hypothesis in which our dreams are just simulations of problems from which we can learn to survive better.

  • @PaniniWasteland
    @PaniniWasteland 7 ปีที่แล้ว +151

    I remember I caught my sister sleep talking when I was getting ready for work and she screamed "I'M NOT GOING TO DO IT!" It startled me pretty bad but it was pretty funny.

    • @wetowl479
      @wetowl479 6 ปีที่แล้ว +4

      I said "dad can I have a cookie?"

  • @Shyles25
    @Shyles25 7 ปีที่แล้ว +159

    4:12 "REM sleep is sort of paradoxical. Your motor cortex is jumping all over the place but your brain stem is blocking those messages leaving your muscles so relaxed that you're basically paralyzed except for your eyes."
    You just explained Sleep Paralysis. It's freaky.

    • @Dunnygirl21
      @Dunnygirl21 7 ปีที่แล้ว

      how do you make that stop!? i experience this more often than i would like. like in a year it will have at least twice if i am lucky.

    • @Shyles25
      @Shyles25 7 ปีที่แล้ว +5

      Dunnygirl21 idk how to stop it. But I've only had it once or twice while sleeping on my back. When I sleep on my side it never happened.

    • @Shyles25
      @Shyles25 7 ปีที่แล้ว +1

      Nadia Zaleta That's unfortunate. I guess there's no way to stop it. And I'm surprised you kept going back to sleep. Lol

    • @Jess-nz7be
      @Jess-nz7be 7 ปีที่แล้ว +2

      Dunnygirl21 i drink camomile tea everynight before bed works for me also i use this lavender like spray i dunno if it's placebo effect but it hasn't bothered me in 3 months

    • @ushnar9346
      @ushnar9346 4 ปีที่แล้ว +4

      @@Dunnygirl21 if you sleep on your right side first as soon as u lie on ur bed with ur hands underneath ur hand prevents sleep paralysis for me ! Infact was a Sunnah (habit) of the prophet Muhammad (pbuh) . I do it and it works!!

  • @abiguzman4117
    @abiguzman4117 8 ปีที่แล้ว +396

    This guy is doing great. i feel like i can learn more accurate viewpoints of how this whole science thing works. I hope he has calculus videos or starts doing math too

    • @haleygold9481
      @haleygold9481 8 ปีที่แล้ว +3

      +Abi Guzman He has a channel called "Sci Show" that you may like :D

    • @haleygold9481
      @haleygold9481 8 ปีที่แล้ว +1

      +Abi Guzman He has a channel called "Sci Show" that you may like :D

    • @abunnou
      @abunnou 8 ปีที่แล้ว +1

      +Haley McPadden does it have the little animations

    • @haleygold9481
      @haleygold9481 8 ปีที่แล้ว +1

      Not really

    • @dzgn4831
      @dzgn4831 4 ปีที่แล้ว +4

      And I wish he had a medical channel .Because he is such a good narrator

  • @ranpo_edogawa
    @ranpo_edogawa 7 ปีที่แล้ว +599

    I actually had a dream where if I typed 65 into a calculator I would travel through time. The first thing I did was travel to a Wal-Mart to get Halloween themed brownies. Anyone else wanna share their dreams?

    • @danielbush5438
      @danielbush5438 7 ปีที่แล้ว +35

      Emιl Sтeιlѕѕon Had a dream that I was a Jedi once. Was pretty cool.

    • @drakost8848
      @drakost8848 7 ปีที่แล้ว +85

      I had a dream that I was in a field with an old woman next to a dry riverbed. The woman erupted into thousands of rats that swept into the river and ate everything in a nearby village. Some of my other dreams are far worse than that.
      For some reason my dreams are interconnected, one happens after another chronologically. I keep a journal so I can one day adapt my night terrors into a game or book.

    • @Megan81159
      @Megan81159 7 ปีที่แล้ว +60

      Emιl Sтeιlѕѕon one time I dreamed I could travel ten seconds back in time by touching live playdoh worms. Another time the government was trying to ban all plushies so all the stuffed animals and I led a revolution.

    • @ranpo_edogawa
      @ranpo_edogawa 7 ปีที่แล้ว +14

      The Polymer Buffet​
      That sounds amazing omg

    • @lanza3861
      @lanza3861 7 ปีที่แล้ว +41

      had 3 consecutive dreams in which someone locked me in a dark room and looked at me through the door window. Each time, I had to (just an intuitive feeling) turn around and walk towards a small mirror on the opposite wall, then will myself to wake up (I was aware I was dreaming each time, but waking up was a battle against my own mind), only to fall asleep and have the same, but more ominous, dream again.

  • @Torguish
    @Torguish 9 ปีที่แล้ว +208

    Running naked, teeth falling out chased by a Matt Damon centaur....
    This should be a movie. Definitely should be a movie.
    Someone make this a movie.

    • @Torguish
      @Torguish 9 ปีที่แล้ว +5

      That bananafingerraccoonbaby would be a nice ending to the movie.
      He's just misunderstood. D:

    • @SidPhoenix2211
      @SidPhoenix2211 9 ปีที่แล้ว +3

      One, time in my dreams, I was Iron Man, and it was totally awesome. Then one time, I was Batman and I saved my school. Then one time when I was really small, this tv actor came to me dressed in a Spiderman suit, and stole all my toys. Weird

    • @Torguish
      @Torguish 9 ปีที่แล้ว +2

      Siddhant Pandey i once saw a dream where the hulk had a cameltoe.
      Thats fucking weird.

    • @ssj9997
      @ssj9997 9 ปีที่แล้ว

      Torguish I don't think it would make a good movie, sorry

    • @Torguish
      @Torguish 9 ปีที่แล้ว +1

      ssj9997 YOU PARTY POOPER YOU!

  • @Xenolilly
    @Xenolilly 10 ปีที่แล้ว +46

    I struggled with Math for a long time, but my teacher who actually helped me told me to sleep after learning a difficult concept.. This was the first class I was able to excel. Study plus sleep really worked for me. Perhaps it was just a placebo. Who knows.

    • @nicolewong9638
      @nicolewong9638 10 ปีที่แล้ว +8

      No, that would make sense! It's been researched because everyone is interested in maximising their studies before exams. Sleeping helps consolidate knowledge you have fed your brain. That's part of why it's so highly recommended to get a good night's sleep after studying and before an exam.

  • @salmonsalmon22
    @salmonsalmon22 7 ปีที่แล้ว +338

    I once dreamed of Link and Zelda having a Pokemon battle

    • @FlameWorthGaming
      @FlameWorthGaming 6 ปีที่แล้ว +7

      RuthAnn107 that means that you often fantasize about old men fighting with sticks while being cheered on by chickens without eyes.

    • @Tale_Teach
      @Tale_Teach 6 ปีที่แล้ว +4

      I love you, don't marry me.

    • @peter-peterpumpkineater4982
      @peter-peterpumpkineater4982 5 ปีที่แล้ว +7

      who won

  • @bethansloman1773
    @bethansloman1773 7 ปีที่แล้ว +133

    can you do a video on sleep paralysis please?

    • @princessvlog2699
      @princessvlog2699 7 ปีที่แล้ว +4

      Bethan Sloman yes please!

    • @Pebbles18
      @Pebbles18 7 ปีที่แล้ว +1

      Gods, please!!! There's so little stuff about it

    • @arminarlert1953
      @arminarlert1953 7 ปีที่แล้ว +1

      Bethan Sloman its an example of Hypnopompic Hallucination which some of us experience right after waking up. :)

  • @ethangab9776
    @ethangab9776 8 ปีที่แล้ว +190

    Dont let your dreams be dreams!

    • @DonnaIRL
      @DonnaIRL 8 ปีที่แล้ว +24

      +Gab B yeah but in my dreams my shoes usually go missing

    • @amfadedbiiish1867
      @amfadedbiiish1867 7 ปีที่แล้ว +6

      Psych IRL... Sam Winchester? is that u?

    • @maryakrivopoulou3584
      @maryakrivopoulou3584 6 ปีที่แล้ว +3

      am FADED BIIISH would you look at that,the SPN fandom has made it to an educational channel.Our next goal: Dr. Phill

    • @ItsKardamin
      @ItsKardamin 6 ปีที่แล้ว +9

      I think some dreams need to stay dreams.

    • @hackerbot809
      @hackerbot809 6 ปีที่แล้ว

      As a wise man once said

  • @sjbrooksy45
    @sjbrooksy45 10 ปีที่แล้ว +124

    Glad I'm not the only one who's had the Matt Damon centaur dream.

  • @MadelineLewis1234
    @MadelineLewis1234 9 ปีที่แล้ว +225

    Has anybody else died in their dreams? One night I dreamt that I was on a dark porch staring at a candle. Woke up several times but went back to that same scene every time. Then at around 6 in the morning, a man came out of the dark, picked up the candle, and burned me to death. The rest of the night all I saw in my dreams was black. Never happened again, but it did scare the heck out of me.

    • @celinematthews4394
      @celinematthews4394 9 ปีที่แล้ว +39

      Wow. That's scary

    • @katyaballands8260
      @katyaballands8260 9 ปีที่แล้ว +6

      Damn

    • @Toxiccranberry98
      @Toxiccranberry98 9 ปีที่แล้ว +10

      yes I have died in my dream but it wasn't as extreme as in yours!

    • @AlexandarKrastanov
      @AlexandarKrastanov 9 ปีที่แล้ว +37

      I never died in my dreams. Everytime I somehow manage to escape death. Even by (can you believe it) forced awakening from my dream (I just say to myself: this is not real, you must wake up!).

    • @michaelinsero402
      @michaelinsero402 9 ปีที่แล้ว +18

      When I was younger, I died in my dreams, but I was kind of watching myself being cut up and torn apart by eagles in a 3rd person view.

  • @AngelStars101
    @AngelStars101 9 ปีที่แล้ว +197

    This sounds really weird but sometimes I have dreams and they end up happening exactly how I saw it in the dream in real life.. not huge events or anything, just like short clips of me walking down the stairs or getting out of a car and stuff like that. It used to happen a lot when I was a child, but now it only happens a few times in a year. Someone else I know says that the same thing happens to him sometimes as well, and yeah, it's pretty weird.

    • @AngelStars101
      @AngelStars101 9 ปีที่แล้ว +47

      Sometimes I forget about the dream until it actually happens in real life, and I get a deja vu feeling

    • @kennethlancaster5147
      @kennethlancaster5147 9 ปีที่แล้ว +17

      AngelStars101 Same here. Very strange. I once heard that this is our parallel lives intercepting at a common point. Neat idea....

    • @emeraldchild97
      @emeraldchild97 9 ปีที่แล้ว +15

      Same thing, it might be that since are brains are immensely active when asleep the brain is able to predict logically what will happen in the future.. but then probably not. when I was six I dreamt of an image that I then saw nine years later at the Holocaust museum (also it was this really obscure thing that there was no way I would have ever seen it before).. so yeah... preeettty weird.

    • @Sk8Joker1
      @Sk8Joker1 9 ปีที่แล้ว +6

      Yeah I dream about my everyday life too. When I woke up, it was my everyday life as well! So insane.

    • @carlaismm
      @carlaismm 9 ปีที่แล้ว +12

      Ru The deja vu feeling has a logical explanation. It's actually just your brain noticing something before you realize you've noticed it, so when the information really reaches your consciousness, you also remember what your brain noticed before you did, so it's like you've seen it before. But if you really dream something and remember it well and then it actually happens, that it pretty weird and cool.

  • @PikachuDenki
    @PikachuDenki 7 ปีที่แล้ว +331

    Is it bad that I got tired during this video? And almost fell asleep twice?
    It's not because the video is boring (it's not, I love Hank and psychology), but I'm just really tired suddenly ...
    The only reason I'm commenting is because Hank said, "If you stayed awake during this episode, you learned ... " at the end, and it was quite amusing. It felt like some sort of jab at me for almost falling asleep. Lol, oops.

    • @thebearbea
      @thebearbea 7 ปีที่แล้ว +1

      I ended up sleeping 3 times so...

    • @Edgelordess
      @Edgelordess 7 ปีที่แล้ว +5

      The only reason I'm tired is becuase I decided to have a midnight snack while watching this.

    • @georgiacrisp
      @georgiacrisp 7 ปีที่แล้ว +9

      same!! and does Hank have a crush on matt damon?

    • @chadking8973
      @chadking8973 7 ปีที่แล้ว

      LuckyCandi felt the same

    • @Cloud-fs5qx
      @Cloud-fs5qx 6 ปีที่แล้ว +9

      Ya I started feeling tired too. Must be the talk of sleep that makes us tired. CrashCourse has suddenly become Pavlov's dog experiment...

  • @ADyingFaith
    @ADyingFaith 10 ปีที่แล้ว +243

    Anyone experienced sleep paralysis. That is terrifying.

    • @vanissaberg5824
      @vanissaberg5824 6 ปีที่แล้ว +18

      I have! And what's crazy about it I didn't even know what sleep paralysis even was until recently. My parents are super religious and told me it was Satan's demons and evil spirits attacking me while I slept which naturally, adding their beliefs to the mix, made the experience even more terrifying!

    • @nishatanaira857
      @nishatanaira857 6 ปีที่แล้ว

      ME! just recently... It suxx

    • @jasminem8465
      @jasminem8465 5 ปีที่แล้ว +7

      Lynda Murray i often get sleep paralysis I kinda got used to it lol does that even make sense

    • @70X1CW4S7E
      @70X1CW4S7E 5 ปีที่แล้ว +2

      I haven't but what I've herd about it I don't want to xD

    • @danandam7100
      @danandam7100 5 ปีที่แล้ว

      Yes

  • @crashcourse
    @crashcourse  10 ปีที่แล้ว +245

    Why do we sleep? Well... that's a tricky question. More easily answered is the question,"How do we sleep?" In this episode of Crash Course Psychology, ***** discusses some of the ways our brain functions when sleeping and how it can malfunction as well.
    To Sleep, Perchance to Dream - Crash Course Psychology #9

    • @nathancook8048
      @nathancook8048 10 ปีที่แล้ว +5

      Because we get sleepy...

    • @hey_its_a_me_pario
      @hey_its_a_me_pario 10 ปีที่แล้ว

      nathan cook, it's never that easy

    • @nathancook8048
      @nathancook8048 10 ปีที่แล้ว

      Pari Vermani those arent my words....those are the words of leading scientists in the field...I don't remember exactly who said it....

    • @hey_its_a_me_pario
      @hey_its_a_me_pario 10 ปีที่แล้ว

      nathan cook I thought scientists were supposed to be more precise... I wonder where they went wrong...

    • @TheScaryfluff
      @TheScaryfluff 10 ปีที่แล้ว +10

      Can you please do something on sleep paralysis. I had it so went to research it and there are so many good, bad, weird and crazy explanations out there.
      I'd love to see a video on that.. I think a lot of people would too.
      Thanks

  • @TheTwinkieFairy
    @TheTwinkieFairy 10 ปีที่แล้ว +22

    I've heard that sleeping (and dreaming) is also a time when we "clean out" our neural pathways. Like, getting rid of unneeded junk we acquired throughout the day and making our memories of important things that happened (that we want to remember) and putting them in our dreams. That's why a lot of times our dreams are based on our day. People with weirder dreams either have nothing of real value from the day to commit to memory, or just spent too much time playing that certain game or just did nothing and let their mind wander throughout the day.
    I once had a dream and when I woke up I had one thought: "You don't have the third breast of creativity!!"
    I still have no idea what that means... -.-"

  • @Aly-ym9yi
    @Aly-ym9yi 7 ปีที่แล้ว +10

    I've been watching these videos because I just started my psychology course (today was day three), and I really want to learn more about some of the topics that we've discussed so far. Definitely not disappointed. CrashCourse never fails to impress me and teach me tons of cool information. 😊❤

  • @Jhf_eclipse
    @Jhf_eclipse 10 ปีที่แล้ว +60

    I have no idea how zombie versions of Mario Bros characters chasing me in a Walmart parking lot could be a compilation of things I've done during the day and or mimics my reality.

    • @dinadina2000
      @dinadina2000 10 ปีที่แล้ว +12

      We'll maybe maybe you went shopping at Walmart and while you were there you passed a Mario Wii game and/or a season of the walking dead or something

    • @Jhf_eclipse
      @Jhf_eclipse 10 ปีที่แล้ว

      Dina Rubina That's a great explination.

    • @dinadina2000
      @dinadina2000 10 ปีที่แล้ว

      yeah i'm just astrong believer in the it's got to do with your life directly theory (noon technical term) but your welcome

    • @robertcline2231
      @robertcline2231 10 ปีที่แล้ว +3

      Personally, I have forgotten nearly every dream I had (of all the nights and dreams i had in the 15 years i've been alive, I can only recall about 12).
      But the dreams I DO remember seem to relate to personal things, such as family trip, a show I used to watch, a nightmare of my worries, or a nightmare about some worries I had during a family trip while watching TV

    • @greoge1381
      @greoge1381 10 ปีที่แล้ว +1

      Robert Cline I can only remember 1 lol. From when I was 7ish. I was being hunted by a(n) crocodile or alligator (don't know which) and I am 14

  • @TeaDrinker3000
    @TeaDrinker3000 10 ปีที่แล้ว +15

    The accuracy of the Fight Club reference was genius

  • @LeBadman
    @LeBadman 7 ปีที่แล้ว +10

    Hank, all teachers should be like you! A big thank you for the team behind Crash Course as well!

  • @nathanhaimson
    @nathanhaimson 4 ปีที่แล้ว +16

    Both my mom and I have a sleep disorder called Delayed Sleep Phase Disorder. Basically our circadian rhythms are off, meaning our brains release melatonin at the wrong time. For some people, it's only off a little (a few hours), but I have it really bad, so my body naturally wants to go to sleep at 4-6AM and wake up around 3-5PM. It's really hard to deal with because I work during the day, and even if I manage to force myself to sleep at night (which is difficult), my brain is releasing melatonin in the middle of the day so I'm slow and sleepy. It would be like someone with a normal sleep schedule having to work a full shift in the middle of the night. It's super shitty I hate it.

  • @pathologicallydead7210
    @pathologicallydead7210 8 ปีที่แล้ว +10

    binge watching this for my philosophy class tomorrow, thank you for the awesome videos so far!!! 31 episodes to go

  • @machinamawatcher
    @machinamawatcher 10 ปีที่แล้ว +3

    I love how these are being released at roughly the same time my Psych Class is learning these things. Great stuff.

  • @DatSQ5
    @DatSQ5 6 ปีที่แล้ว

    I love that people like you do videos like these. I refuse to see a therapist even though my PCP has told me I have GAD and possibly bipolar and multiple personality. These help me and I'm more comfortable listening.

  • @sounak_mitra1403
    @sounak_mitra1403 8 ปีที่แล้ว +1

    I'm seeing these videos for some time..and I can't seem to believe how much Hank can continuously talk. His flow of speech is superfluous.

  • @oafkad
    @oafkad 10 ปีที่แล้ว +37

    "Here's hoping you won't need any stitches when we are through." *suggestive glance*
    >blushes<
    Oh Hank.

  • @AngelusLabyrinth
    @AngelusLabyrinth 6 ปีที่แล้ว +17

    I once dreamed of a beautiful, soft, large bed. In my dream, I was so happy to be in that bed that I rolled on it. Then in real life, I rolled off my sofa and into the floor. Because I don't have a bed and sleep every night on the sofa. Wonderful.

  • @scouterlion5363
    @scouterlion5363 9 ปีที่แล้ว

    I have to do a school project on sleep and dreams and THIS HAS ABSOLUTELY EVERYTHING THANK YOU SO MUCH

  • @jennifervalentine390
    @jennifervalentine390 5 ปีที่แล้ว

    I swear I come here all the time! But it's so useful, I learn a lot more than I have in 16yrs of schooling and shoving useless information for a test that'll never kick me where I need to go!! (I appreciate y'all so much thank you!!)

  • @Sapnasharma-xj1vr
    @Sapnasharma-xj1vr 4 ปีที่แล้ว +46

    I once dreamt about my best friend having duck feet and james Corden forcing her to give them for his "spill your guts or fill your guts" I came to defend her and somehow ended up in a carpool karaoke with me and hank green singing "This isn't Hogwarts" together😂

  • @1234kalmar
    @1234kalmar 10 ปีที่แล้ว +15

    I once dreamt that I was out in the garden. Everything seemed okay, except for the black clouds. Then I heard thunder... My dad appeared (out of nowhere) and said: "hmm, the shields are holding nicely, the aliens won't get in anytime soon." O.o Even wierder, was my response "The shockwaves will finally make it rain."
    It was after i woke, when it dawned upon me: Don't watch 6 episodes of SG atltantis in one day.

  • @hannahschnell58
    @hannahschnell58 9 ปีที่แล้ว +1

    Thanks Hank! This helped a lot on my Dreams Inquiry Project thing.

  • @susiedalziel2171
    @susiedalziel2171 8 ปีที่แล้ว +1

    really love these crash course videos. best on the net. thanks guys x

  • @andrewselvig7848
    @andrewselvig7848 8 ปีที่แล้ว +45

    Sometimes when I wake up and and when I close my eyes again I instantly dream.

    • @MrUnpredicatable21
      @MrUnpredicatable21 8 ปีที่แล้ว +17

      Same here I can go back into the dream I was dreaming if I do it fast enough

    • @calebstewart2556
      @calebstewart2556 6 ปีที่แล้ว +1

      Me too lol but I rarely get dreams so when I do they're very good

    • @Chief-rx5zr
      @Chief-rx5zr 5 ปีที่แล้ว

      Andrew Selvig you wouldn’t know if you “instantly dreamed” because there is no awareness when sleeping outside of dreaming.

  • @jessicawardlaw1821
    @jessicawardlaw1821 6 ปีที่แล้ว +3

    What I've noticed about the relationship between night terrors and insomnia with adults, is that a lack of sleep or not getting enough might cause more stress, causing the episodes in the first place. Glad Hank mentioned night terrors! There isn't much I could find on it.

  • @johannauhl8862
    @johannauhl8862 8 ปีที่แล้ว

    after a few episodes of crash course,I feel like I have learned more than I have learned in school today.Thank you!

  • @ErokowXiyze
    @ErokowXiyze 7 ปีที่แล้ว

    OMG, I love the script for this episode. So good. Thanks guys.

  • @catstate
    @catstate 10 ปีที่แล้ว +21

    Really surprised you didn't reference lucid dreaming or sleep paralysis!

    • @MichelleTapp405
      @MichelleTapp405 10 ปีที่แล้ว +1

      He's done videos about that on SciShow- check them out, they're cool! :)

    • @catstate
      @catstate 10 ปีที่แล้ว +2

      I've seen them ^^ I just figured he would at least mention them, hehe x3

  • @johnnyr25
    @johnnyr25 10 ปีที่แล้ว +11

    Wow. An episode about dreams without one Inception reference. I'm impressed....Hey. Why does this top keep spinning...

  • @anim604
    @anim604 9 ปีที่แล้ว +1

    that was informative and educational yet entertaining,
    thank you for the great video!

  • @ibtisamfatima7567
    @ibtisamfatima7567 4 ปีที่แล้ว

    Awesomely explained

  • @drpuppy1989
    @drpuppy1989 6 ปีที่แล้ว +19

    So, I was on my computer while watching this on my phone and when he said, "Stop breathing" my computer shut off.

  • @A.Mayflower127
    @A.Mayflower127 5 ปีที่แล้ว +3

    I love the Fight Club reference

  • @mikacastillo6396
    @mikacastillo6396 7 ปีที่แล้ว +2

    I love the moment where youre not quite asleep but not quite awake, youre just deeply relaxed, and starting to fall completely asleep

  • @annabelilo8530
    @annabelilo8530 7 หลายเดือนก่อน +1

    Now .. This is Gold .

  • @thaloblue
    @thaloblue 10 ปีที่แล้ว +9

    I used to vividly dream mostly in the spring, and those were usually either really weird distortions of what I did in the day or nightmares.
    I dreamt once that a giant grasshopper bit off my hand, and when I woke up my hand was tingling for two hours after

    • @thaloblue
      @thaloblue 10 ปีที่แล้ว +8

      *****
      That makes a LOT of sense haha thanks! :D

    • @sasharemington6025
      @sasharemington6025 9 ปีที่แล้ว +2

      Or it might have been a kind of placebo effect.

    • @Prizzlesticks
      @Prizzlesticks 9 ปีที่แล้ว

      This comment paired with your username cracks me up. Yes, that DEFINITELY sounds like a dream about love. That grasshopper LOVED your hand.

  • @courtney1612
    @courtney1612 8 ปีที่แล้ว +51

    I'm watching this at 2 am and i have class at 6

    • @josesblima
      @josesblima 8 ปีที่แล้ว +1

      +courtney de Villiers OMG are you in my class?

    • @iainturbarbie1101
      @iainturbarbie1101 6 ปีที่แล้ว +3

      Courtney 6 WTF THAT'S EARLY

  • @Elexica
    @Elexica 7 ปีที่แล้ว

    The intro to this video is just brilliant.

  • @mayou5a
    @mayou5a 7 ปีที่แล้ว

    this was so informative and useful, I feel full! Thanks a million!

  • @SuperNumber420
    @SuperNumber420 10 ปีที่แล้ว +3

    Ahh he returns!!!

  • @sptells
    @sptells 10 ปีที่แล้ว +29

    Have there ever been studies done as to why pregnant women have such vivid dreams? I know I'm not the only one who has experienced this (there are websites devoted to it), but as someone who rarely remembers dreams, I'm practically haunted by one I had when I was pregnant with my daughter. Content of the dream aside (it was pretty terrible), the concept fascinates me.

    • @George4943
      @George4943 10 ปีที่แล้ว +9

      I suspect that not only pregnant women have vivid dreams but others facing a life-altering situation. We all have an automatic fear of the unknown. Because it is unknown our dreams are unconstrained. The projected consequences (sometimes pretty terrible) are tested for emotional content. How would it feel if the worst consequence happened. That feeling may wake you up leaving its trace in memory which, after all, is cemented by emotion. You did not know Li who died two days ago. I know. It is in memory. Cemented by emotion.
      Living memories of Li
      A good life well lived
      Beloved by all she met
      Loving Memories

    • @sptells
      @sptells 10 ปีที่แล้ว +1

      George Steele My deepest condolences to you. I may not have known Li, but she sounds lovely. And beloved.

    • @jessarose2288
      @jessarose2288 6 ปีที่แล้ว +6

      I think all of the hormones also contribute to a lot more brain activity.

    • @johannanichols5853
      @johannanichols5853 5 ปีที่แล้ว +4

      It’s probably related to the anxiety of becoming a parent, whether you’re aware you’re nervous about it or not. I mean, bringing a child into the world is something so terrifying and major, it would make sense that your brain is super active and the dreams are so vivid. For some it continues after the birth of the child as well.

    • @Em_Elizabeth
      @Em_Elizabeth 5 ปีที่แล้ว +3

      My mom once had a dream that we were all walking through a park and my sister stayed off to wade in a pond and drowned. She woke up in tears and put my sister and I through swim lessons.

  • @tigger8163
    @tigger8163 4 ปีที่แล้ว

    I love watching psychology videos like this I've been on a little binge

  • @vampbat
    @vampbat 6 ปีที่แล้ว +1

    I've read Mike Birbiglia's book! It's legit one of my favorite things
    I've ever read, so happy to see his experiences discussed here!!

  • @rumiahmed1494
    @rumiahmed1494 8 ปีที่แล้ว +11

    I got real exited when he said David Lynch

    • @paolaeast
      @paolaeast 8 ปีที่แล้ว

      +Rumi Ahmed me too, lol

    • @rumiahmed1494
      @rumiahmed1494 8 ปีที่แล้ว +2

      you like twin peaks?

    • @beback_
      @beback_ 8 ปีที่แล้ว

      I got excited when he mentioned Terry Gilliam!

    • @AimeeColeman
      @AimeeColeman 8 ปีที่แล้ว

      Same ^.^

  • @mikeg5616
    @mikeg5616 8 ปีที่แล้ว +67

    the AP test brought me here.

    • @tpanda
      @tpanda 8 ปีที่แล้ว

      Same 😫

    • @darkwisteria9120
      @darkwisteria9120 8 ปีที่แล้ว

      +Tianda Mahingen OMG SAME. Best of luck today

    • @mikeg5616
      @mikeg5616 8 ปีที่แล้ว +1

      it was not that bad. i would talk about it but do not want to get in trouble. LOL

    • @SugarMania234
      @SugarMania234 8 ปีที่แล้ว +1

      +Michal Gaik CLEP test brought me here lol

    • @hyunjoong1000
      @hyunjoong1000 8 ปีที่แล้ว

      same!

  • @-dreameasy-4449
    @-dreameasy-4449 5 ปีที่แล้ว

    I am glad with this video as I am a teacher of psychology specializing in dream studies and I am happy that crash course was very factual.

  • @Cedille51
    @Cedille51 4 ปีที่แล้ว +1

    I really enjoy watching your content. Learning and laughing at the same time, thx for that !
    From France :)

  • @EpochSecutor
    @EpochSecutor 8 ปีที่แล้ว +109

    So did anyone else spot the Fight Club reference in the video?

    • @MareSwiss
      @MareSwiss 8 ปีที่แล้ว +8

      +Orion the Sylveon u mean at 4:34, well done sir ;D

    • @evanknowles4780
      @evanknowles4780 8 ปีที่แล้ว +4

      +Orion the Sylveon was it that he didn't talk about Fight Club?

    • @5easy
      @5easy 8 ปีที่แล้ว

      +Evan Knowles lmfao

    • @mangotango2481
      @mangotango2481 8 ปีที่แล้ว +1

      I love the references that are put in these videos.

    • @dantedante21
      @dantedante21 7 ปีที่แล้ว

      ok good was thinking no no one commented

  • @EitanLevinzon
    @EitanLevinzon 10 ปีที่แล้ว +4

    awesome fight club reference! 4:30

  • @shoelace19
    @shoelace19 9 ปีที่แล้ว

    Your voice tone & rhythm of your videos do put me to sleep and make me zone out.

  • @aafriniqbal6913
    @aafriniqbal6913 4 ปีที่แล้ว

    I love this channel. Its sooo useful and I learn alot

  • @JadehavenAcademy
    @JadehavenAcademy 9 ปีที่แล้ว +10

    When Hank was talking about how narcolepsy could get in the way of pole vaulting I imagined an Olympic athlete falling asleep mid vault and just face planting.

  • @cageyourheart8772
    @cageyourheart8772 9 ปีที่แล้ว +32

    Tetris dreams are an all too common occurence for me.

    • @mewichigo4924
      @mewichigo4924 9 ปีที่แล้ว +8

      Cage Your Heart Your username and profile picture combined are amazingly awesome.

    • @swiftlylovestruck
      @swiftlylovestruck 9 ปีที่แล้ว

      Cage Your Heart never dreamt of this.. :P

    • @LilyMyLolita
      @LilyMyLolita 8 ปีที่แล้ว +1

      +Mew Ichigo Indeed! Nice pun.

  • @DareToRS
    @DareToRS 9 ปีที่แล้ว

    Did anyone else happen to notice the blood-spattered, burgundy-jacketed man in the thought bubble at 4:34?
    Potential easter eggs aside, a great video, as always! Loving all of the CrashCourse episodes so far!

  • @seaeraraquel
    @seaeraraquel 7 ปีที่แล้ว

    this was really helpful

  • @darraghtate440
    @darraghtate440 10 ปีที่แล้ว +4

    Okay, seeing this in my newsfeed right now, when I have been awake for 40 hours, and seeing a picture of Neil Gaiman when I have both a copy of Sandman (volume 8) and American Gods on my bedside table right beside me... I think I'm dreaming.

    • @darraghtate440
      @darraghtate440 10 ปีที่แล้ว +3

      Also, my bed is an a balcony so if I freak out like that dude, I'm falling 10 foot down a ladder. Damn.

  • @PennyPLove
    @PennyPLove 10 ปีที่แล้ว +25

    WATCHING WITH A FRIEND:
    Friend: We spend 1/3 of our life sleeping! That stinks!
    Me: I'm okay with that.

  • @ahmedabdal-rahman7984
    @ahmedabdal-rahman7984 5 ปีที่แล้ว

    The best thing that make crush course Lectures very interesting is this lovely way to teach the funny informative pakeg

  • @heidi_elizabeth3255
    @heidi_elizabeth3255 4 ปีที่แล้ว +1

    love this dude

  • @kaitlinalcontin7967
    @kaitlinalcontin7967 10 ปีที่แล้ว +10

    I think Matt Damon and your bananababy-raccoon hybrid may have scarred me for life

  • @mlpcritic6738
    @mlpcritic6738 8 ปีที่แล้ว +4

    I'm subbing for the Reel Big Fish shirt

  • @xBeth4x
    @xBeth4x 7 ปีที่แล้ว

    This helps out so much in my Psychology class.

  • @DBSstudios
    @DBSstudios 9 ปีที่แล้ว

    Thank you so much for these, they help so much in college!

  • @gabrielagarcia5700
    @gabrielagarcia5700 9 ปีที่แล้ว +5

    So, on the day of my 16th birthday, I went ice skating. The problem is, I had never gone ice skating before. Long story short, I kept falling on the ice. By the time I got home that I went to bed I had started recalling my time on the ice and that's when I suddenly had imagined myself slipping and falling and my body and jerked so hard it almost woke me.

  • @nadiact-ie5hy
    @nadiact-ie5hy 10 ปีที่แล้ว +26

    "I fell in love the way you fall asleep; slowly, and then all at once." - Hazel, TFiOS by John Green
    Also, Hank, did you just give birth to your brother?

    • @BeCurieUs
      @BeCurieUs 10 ปีที่แล้ว +3

      Who hasn't!

  • @cameronkendeasis3390
    @cameronkendeasis3390 5 ปีที่แล้ว +1

    Best teacher ever

  • @FAMEBangBang
    @FAMEBangBang 5 ปีที่แล้ว

    Loved This!😃👏🏼👏🏼👏🏼 1st time watching!

  • @Whyeld
    @Whyeld 8 ปีที่แล้ว +6

    What about Lucid dreams?? I have them nearly every night where I can "rewind" my dream and change it to how I want it to go. I typically have them in nightmares when something gets me trapped or I can't shut a door so I just rewind it and try again. I do have Insomnia so does that make me more likely to Lucid dream when I do fall into REM? because I know that people hardly ever Lucid dream and I do it all the time. (It's not as fun as it seems when it happens every night. Sometimes I just want it to play out but then my body forces it to rewind.) And sometimes when it "rewinds" it just does the same thing, it can take me up to like 20 times of "rewinding" in my dreams for it to change but I know I'm dreaming... I don't really know how to explain it but it is confusing.
    Thanks
    Drew

  • @katyn5237
    @katyn5237 8 ปีที่แล้ว +21

    when you actually fall asleep while you're supposed to be learning about dreaming.

  • @macycamille
    @macycamille 8 ปีที่แล้ว +1

    Omg this channel is so much better than DNews!!

  • @ericwptv
    @ericwptv 10 ปีที่แล้ว

    I just found your channel, the videos you guys produce are phenomenal! I have a Intro to Psy final on Tuesday and this is a great way for me to visually learn the information!

  • @JakeTheHuman_
    @JakeTheHuman_ 8 ปีที่แล้ว +10

    diggin the Reel Big Fish shirt

  • @AceGinger
    @AceGinger 10 ปีที่แล้ว +5

    Back when I was obsessed with beating Marathon Tetris I dreamed of blocks and music! That's hilarious!

  • @rebeccaf6300
    @rebeccaf6300 8 ปีที่แล้ว

    My grandfather was a sleep specialist. Its so cool that I already knew all this.

  • @muki5798
    @muki5798 8 ปีที่แล้ว

    Hi I like this video, especially the advice in the second half about common sleep aid

  • @Naeisonfire
    @Naeisonfire 8 ปีที่แล้ว +7

    cramming bc AP test tmrw

  • @JamesRoyceDawson
    @JamesRoyceDawson 10 ปีที่แล้ว +6

    And here I am, avoiding sleep to watch this video :P

  • @carlapierini7547
    @carlapierini7547 6 ปีที่แล้ว

    brilliant video !

  • @StephenRayner
    @StephenRayner 9 ปีที่แล้ว

    Awesome! Thank you!

  • @thepip3599
    @thepip3599 9 ปีที่แล้ว +5

    I've been writing down my dreams for a while, here they are. A lot of stuff is misspelled, in bad grammar, and/or just plain are difficult to understand, but I was really tired when I wrote them down. They are really weird. Enjoy
    I had word dream that we were
    at our church and we were dressed as Greeks and Romans, except Elliott and those really anoying kids he hangs out with, they were dressed like Vikings. Then I made friends with them, and they somehow seemed awesome, and had a medieval-style lair. They showed me how to go through one of the doors in the church without being noticed. Then someone (a woman) fell down the stairs and were dying and delirious . They said they wanted to be on this side of the yellow line. I had to sneak past them, and go through the door in the secret way I learned. Then I got help, and he thought I was kidding, but I showed him, and while I was gone tons of people had gathered in that room, and were running around being crazy, and suddenly Matt was here, and said that she isn't the same person, she's, changed. Then he stabbed her above the eye and said something about Doritos. Then I woke up.
    I had a weird dream where I bread a dog with a cow using a turnip, and got a vegetable dog. It was a husky. There were gross candy caramel things who've were apparently impossible to make they had them at the mall. Also, it was in a mall.
    I had a weird dream, that Rhett and Link apparently always say that are sponsored by Disney, as a joke, but they never are. Then I was in the awesome elevator at the mall that used to have a bad food court, that said it had sushi, but it lied. Anyway I was in the elevator, and suddenly it was a pool, and there was a bigger pool underneath, and the one we were in was tiny, like a roller coaster car, and it started moving, like one, and then there was a loop-de-loop, and my iPod fell into the water below, and my books, and me, and that's about when I realized that it made no sense, and I was having a nightmare, so I woke up. It was really weird, because I had been upside-down in the dream, but not in real life, and I'd been on the end of the bed I don't usually sleep on, so i was waking up I was very confused, about whether I was still dreaming or not, and which way was up, until I woke fully within a second.
    I had a dream that that there was a game about roller coasters and cats to "improve your Spider-man skills". The blue cats were evil.

  • @SparkySywer
    @SparkySywer 10 ปีที่แล้ว +9

    We watched Crash Course in school, I learned just how many nerd fighters recognized Hank.

  • @Isa7design
    @Isa7design 9 หลายเดือนก่อน

    Great videos to understand better about us!

  • @kunalsulekh7845
    @kunalsulekh7845 8 ปีที่แล้ว

    I fall asleep while watching this video at night, Hoping to complete the crash course. :3