If you are interested in using this technique, here is an article with suggested reps, sets, pressures, and durations that will allow you to use this technique safely: www.ncbi.nlm.nih.gov/pmc/articles/PMC6530612/
Kind of reminds me of how some para-olympians were found to be breaking a bone (typically a toe) to induce adrenaline production and/or higher blood pressure so they could perform at a higher level in their sport. No pain, because they’re paralyzed, but the body would still react. The paralympics committee banned the act, called “boosting” but it still happens.
Athletic therapist here, been using this with my post-op patients for a few year. I make sure to have the ok from the surgeon first, but it seems to work great clinically
@@GameTimeWhy don’t get my wrong, i never wrote clinically significant which is a stastistical term ;) I said that clinically (in my particular clinical setting) it seems to be working. I invite you to check the litterature for randomized control studies
@@felix-antoinelavoie21 I have read about it, I just didn't see very much for good studies supporting it. It might be kind of like with prolotherapy or prp where the issue is that not many clinicians follow the protocols well or know how to palpate and adjust to a specific individual.
@@GameTimeWhy research in the living on rehab is quite hard to standardise (which is why I chose to do research on cadavers instead 😅) as people react differently. I rarely see strong studies on anaything in rehab. Wheb using BFR, I usually stick with a precise protocol and use doppler US to ensure I am the safest I can be with my patients. And I think switching to weight bearing exercises fast is the key. Personalized rehab is the future of physical/athletic therapy. If you are interested, you could research the work of Scott Delp in biomechanics on the future of research. Very interesting !
@@felix-antoinelavoie21 oh thanks for the suggestion! And yes I 100% agree on personalized rehab. I'm in a related field so I'm super excited. Thanks again :)
I once tried doing BFRT to maximize the muscle pump in my chest during a bench press session, I placed the cuff around my neck to keep blood restricted to my pecs, passed out immediately with 280lbs on the bar 🧟, thank god my spotter was there. He went next with the same result. We returned the cuffs thanks to Amazon's generous return policies.
I just purchased some bands for the legs only as I was experiencing muscle wasting due to effects of cancer and aging. Feeling good is what its about to me - not getting jacked or competing.
It’s great for older people who want to maintain or build muscle but can’t sustain the effort required with high intensity training. I mix Kaatsu with HIT. Works great.
I've used BFR for the last six months, specifically for my arms, and I can tell you that it works. BUT, I know a lot of people that overuse it. I train my arms directly twice a week for no more than 20 minutes using BFR. Sometimes 30 minutes, but there are periods of maybe a minute to 90 seconds here and there where I loosen them to reestablish blood flow before I tighten them again. Every other day I don't use it for other muscle groups. And not only have I seen gains, but I've seen a whole new level of definition and hardness. I don't use them in the legs, because my legs are big enough for one thing. Secondly, if a blood clot is going to form from this type of training, I would bet in the legs would be the highest percentage that it would happen.
Currently watching my clinical instructor use this method with appropriate patients! He had me try it out as well and I will be looking to become certified once I’m out working as a licensed DPT
the problem with BFRT is how long to use it and how often to use it. because that determines whether you will have jacked muscles, fast twitch muscles and increased endurance vs Rhabdomyolysis, DVT, and early onset kidney failure and stroke if the clots are thrown out. it is the same as ketosis vs keto acidosis. where should humans draw the line, and what should be the safe duration of use.
The literature actually doesn’t back it up all that much. At the end of a meso cycle it can be used to try and squeeze out all the metabolite accumulation that may or may not have an impact on hypertrophy (the literature isn’t quite clear) you can, but really there isn’t much of a point to it when there are much more optimal ways to train.
I heard about this back in 2011, some dudebros at the gym read about it in a magazine and were basically tying off their arms with elastic bands like makeshift tourniquets I was skeptical then, and still am
the literature is grey on whether or not it actually does anything leaning towards being irrelevant. You can possibly ink out some metabolite accumulation that may or may not help with hypertrophy (the literature is grey on that too)
I've been looking into this recently. I have multiple surgeries lined up for the fall, and I'm trying to put a plan together to maintain my muscle mass as much as I can while I'm convalescent. Not really sure where I'm going to go with it, the information surrounding BFR training is pretty murky.
@@Lisa_RNHealthHub according to the litterature, they are very very very small. If you use those units in accordance with contraindications, people should be fine.
@@Lisa_RNHealthHub it takes a lot more than temporarily reduced blow flow to cause clots... Especially in already metabolically healthy people, which are likely the ones using this, it'll be nearly impossible to cause a clot by properly using the cuffs... Key word, properly.
For rehabilitation would strongly recommend finding a clinic that uses the Delphi units for personalized BFR. Calculates percentages for appropriate UE and LE use (50% and 80% respectively), cuffs are wide to minimize risk for nerve injury (which can happen with the manual cuffs), and automatic adjustments to keep pressure static throughout repetitions
@@ChrisRaynorMD Great stuff here... I spent 25 years in the SEAL Teams with 12 x ortho rehab periods over that time... last two rehabs were done with BFRT and I was blown away with the rapid-rehab aspect (they used KAATSU on me both times). It's GREAT to see this all getting traction with our USSOCOM physical therapists and trainers... while they use mostly KAATSU due to the automated Cycle function (new oxygenated blood every 30 sec cycle), which is based on Dr. Sato's life's work in Tokyo, they use Delfi as well... so it depends on what the provider likes best. Recommend trying both before making a large investment ;-) I'll drop a good video from Dr. David Chao.
I am a retired Doctor and I use SAGA BFR cuffs as part of my routine at the Gym. I learned it from the Physical Therapists. If done correctly, it is safe and effective.
This channel is gold man. I love the mix of humor, meme, and most importantly science. Need more of this in the world for sure. Also, ya, if people are considering this just work out harder. You're not Usain Bolt. Same thing when kids buy bigger motorcycles than they can use and aren't even twisting the throttle on the one they got. Just turn the throttle more!
How do you do this for pecs? Only works on extremities? I'll have to ask Micheal hutchence for tips on working the traps,SCM and scalenes... wait. On second thought....maybe the warning label should have his portrait. Hehe
Dr. Chris... great video man!! Thank you for helping get the word out!!! Is ok to drop a link to the 10-year long BFR cardiac rehab study done at University of Tokyo? I'm not sure what the rules are here ;-) Keep going with great content!!!
We actually did something like this in a martial arts program I was in in the 90s... We just used one hand to restrict blood flow to the other hand, after doing it for a while I noticed my hand was more muscular and veiny. I’m not even sure why we were doing it.
Any top level competitor knows that at a certain Point you turned from science to the mysticism of it all. Sure it seemed a bit weird that Conor McGregor went to movement training… it is because Conor McGregor was at his peak as far as his striking, grappling, etc. Yes there are no scholarly articles to support this training. There are Olympic level athletes who are winning gold medals like this.
Here's a good video description by Dr. David Chao... uses BFR-T on all his ACL Repairs... actually, i think it will kick off the link... so if you don't see link in next comment, just do a "video" search for this: "What is KAATSU by Dr. David Chao"
Hi Doc, so glad to follow you. What about a video on 'Gangs of New York' movie's injuries? I guess It is a very good movie but not so correct about ... well, I guess none can survive with a knife in the stomach/guts in the 19th century but ... who knows
I was wondering if this could be useful for active recovery. Joe Mercola has been recommending BFRT for older individuals who have a hard time gaining muscle mass, and I think muscle mass is important to prevent insulin resistance.
i came here to see if BFR was good for 🍑 growth but i just got my bicep tendon and some tears in my shoulder repaired soon as i heard you say it seems to benefit injury i tried it ! my arm feel so much better and i felt my muscle do something different .. crazy 😂👏🏽🔥
What would be the difference between this and training till failure? Both would increase lactic acid, decrease O2 etc? Is BRFT not just a pseudo method of training till failure?
Maybe less of an inflammatory response with BFR/KAATSU since you're working at a much lower weight/resistance. In other words, Dr. Sato can do the same workout in the PM he did in the AM since there is no DOMs effect... the dude is 74 by the way. That pick of him wearing the Navy SEAL shirt (that I gave him... see 2 min 53 sec) was taken on his 73rd birthday during COVID. Ya, right?? Crazy. He doesn't move heavy weights, just multi-joint movements at low weight and at higher KAATSU pressures. Pretty cool.
5:50 If they deem it performance enhancement and try to regulate it, I'm sure people would *stop* taking deca-burrito 💉 💊 seriously. The rebound effect that we've seen about covid on a much larger scale already.
...to date, there haven't been extensive reports or studies. Or autopsies. Although I guess with advances in diagnostic testing and imaging, studying the effects need not be that drastic. Fortunately. I guess it must be a pretty challenging thing to come up with a quantitive and qualitive study to test though.
I have a whiplash injury which severely restricts my ability to train with any real kind of weight on my arms. Would you say this technique could be beneficial for me in training my arms?
the literature is grey on whether or not it actually does anything leaning towards being irrelevant. You can possibly ink out some metabolite accumulation that may or may not help with hypertrophy (the literature is grey on that too)
You take the tourniquet off after each set, but the literature is grey on whether or not it actually does anything leaning towards being irrelevant. You can possibly ink out some metabolite accumulation that may or may not help with hypertrophy (the literature is grey on that too)
heard it's good for old people, to stop muscle mass loss and actually build some muscle with intense workouts. Read that restricts for 30 seconds and release for 5 is a formula that works but that uses an expensive automated cuff.
Why wouldn't it be legal? lol The rules for Kaatsu are simple. Without risks?? YES! I'm 67 and have gained 2.5 inches in my biceps. No joint pain. Been using it for over a year. You really are trying to discourage people from a safe and effective protocal. Shame on you!
Dr Raynor, Can you please comment on the xeroshoes guy??? His adds seem like he is banishing all forms of orthotics or modified shoes styles that are not minimalist shoes… Although im all for the possible benefits of minimalist shoes- Portraying his minimalist shoe style brand as the one solution for all foot and lower leg problems is like a mechanic saying that all car problems can be fixed with the same parts… It just seems illogical and untrue.
BFR, especially PBFR isn’t a fad. Department of Defense sunk over 40 mil into its research for wounded warriors. Just crossing over into the civilian market within the past 10 years. Thousands of research articles on its efficacy
the literature is grey on whether or not it actually does anything leaning towards being irrelevant. You can possibly ink out some metabolite accumulation that may or may not help with hypertrophy (the literature is grey on that too)
@@Jmack7861 The ‘grey’ literature is almost exclusively without using the appropriate cuff pressure for the UE and LE (which is 50% and 80% respectively). Check out the literature on PBFR which is featured in several orthopaedic journals.
@@JADC1111 are we talking about in a physical therapy context or hypertrophy and sports performance context? All the literature I’m referring to is in the realm of hypertrophy and sports performance, in which case the literature is grey and inconclusive.
only heard the first 46 seconds... this sounds soo bad and I don't even know the heart and blood vessels like doctors do but damn.. this is just stupid.
If you are interested in using this technique, here is an article with suggested reps, sets, pressures, and durations that will allow you to use this technique safely: www.ncbi.nlm.nih.gov/pmc/articles/PMC6530612/
Kind of reminds me of how some para-olympians were found to be breaking a bone (typically a toe) to induce adrenaline production and/or higher blood pressure so they could perform at a higher level in their sport. No pain, because they’re paralyzed, but the body would still react. The paralympics committee banned the act, called “boosting” but it still happens.
@@ChangeEvery14Days The competitiveness of some people is truly fascinating.
Athletic therapist here, been using this with my post-op patients for a few year. I make sure to have the ok from the surgeon first, but it seems to work great clinically
You've had control groups to see if this protocol is actually clinically significant?
@@GameTimeWhy don’t get my wrong, i never wrote clinically significant which is a stastistical term ;) I said that clinically (in my particular clinical setting) it seems to be working. I invite you to check the litterature for randomized control studies
@@felix-antoinelavoie21 I have read about it, I just didn't see very much for good studies supporting it. It might be kind of like with prolotherapy or prp where the issue is that not many clinicians follow the protocols well or know how to palpate and adjust to a specific individual.
@@GameTimeWhy research in the living on rehab is quite hard to standardise (which is why I chose to do research on cadavers instead 😅) as people react differently. I rarely see strong studies on anaything in rehab. Wheb using BFR, I usually stick with a precise protocol and use doppler US to ensure I am the safest I can be with my patients. And I think switching to weight bearing exercises fast is the key. Personalized rehab is the future of physical/athletic therapy. If you are interested, you could research the work of Scott Delp in biomechanics on the future of research. Very interesting !
@@felix-antoinelavoie21 oh thanks for the suggestion! And yes I 100% agree on personalized rehab. I'm in a related field so I'm super excited. Thanks again :)
You are unbelievable. To speak so smooth about a tough topic is not simple for the smartest people in the world....
Cuz he's real
So my buddy has a calculus test tomorrow... and he used this technique cause he is training his brain... I havent heard from him a weeks.
Brain training with BFR is contraindicated for air breathing mammals.
This is legit funny 😂
I once tried doing BFRT to maximize the muscle pump in my chest during a bench press session, I placed the cuff around my neck to keep blood restricted to my pecs, passed out immediately with 280lbs on the bar 🧟, thank god my spotter was there. He went next with the same result. We returned the cuffs thanks to Amazon's generous return policies.
I just purchased some bands for the legs only as I was experiencing muscle wasting due to effects of cancer and aging. Feeling good is what its about to me - not getting jacked or competing.
It’s great for older people who want to maintain or build muscle but can’t sustain the effort required with high intensity training. I mix Kaatsu with HIT. Works great.
I've used BFR for the last six months, specifically for my arms, and I can tell you that it works. BUT, I know a lot of people that overuse it. I train my arms directly twice a week for no more than 20 minutes using BFR. Sometimes 30 minutes, but there are periods of maybe a minute to 90 seconds here and there where I loosen them to reestablish blood flow before I tighten them again. Every other day I don't use it for other muscle groups. And not only have I seen gains, but I've seen a whole new level of definition and hardness. I don't use them in the legs, because my legs are big enough for one thing. Secondly, if a blood clot is going to form from this type of training, I would bet in the legs would be the highest percentage that it would happen.
Had to do this for rehab when I tore my ACL. Wasnt fun but it got the job done
Currently watching my clinical instructor use this method with appropriate patients! He had me try it out as well and I will be looking to become certified once I’m out working as a licensed DPT
the problem with BFRT is how long to use it and how often to use it. because that determines whether you will have jacked muscles, fast twitch muscles and increased endurance vs Rhabdomyolysis, DVT, and early onset kidney failure and stroke if the clots are thrown out. it is the same as ketosis vs keto acidosis. where should humans draw the line, and what should be the safe duration of use.
The literature actually doesn’t back it up all that much. At the end of a meso cycle it can be used to try and squeeze out all the metabolite accumulation that may or may not have an impact on hypertrophy (the literature isn’t quite clear) you can, but really there isn’t much of a point to it when there are much more optimal ways to train.
That thumbnail. Looking jacked, doc!
Greetings from Chile Dr. Raynor!! I love your channel!!
Thanks for watching!
I heard about this back in 2011, some dudebros at the gym read about it in a magazine and were basically tying off their arms with elastic bands like makeshift tourniquets
I was skeptical then, and still am
BFR is bioscience. It does nothing. You just get a more intense pump when you release the tourniquet.
the literature is grey on whether or not it actually does anything leaning towards being irrelevant. You can possibly ink out some metabolite accumulation that may or may not help with hypertrophy (the literature is grey on that too)
I've been looking into this recently. I have multiple surgeries lined up for the fall, and I'm trying to put a plan together to maintain my muscle mass as much as I can while I'm convalescent. Not really sure where I'm going to go with it, the information surrounding BFR training is pretty murky.
I am actually considering purchasing a unit for our clinic so that our therapists can use it with our rehab patients.
@@ChrisRaynorMD Risks of blood clots tho?
@@Lisa_RNHealthHub according to the litterature, they are very very very small. If you use those units in accordance with contraindications, people should be fine.
@@Lisa_RNHealthHub it takes a lot more than temporarily reduced blow flow to cause clots... Especially in already metabolically healthy people, which are likely the ones using this, it'll be nearly impossible to cause a clot by properly using the cuffs... Key word, properly.
For rehabilitation would strongly recommend finding a clinic that uses the Delphi units for personalized BFR. Calculates percentages for appropriate UE and LE use (50% and 80% respectively), cuffs are wide to minimize risk for nerve injury (which can happen with the manual cuffs), and automatic adjustments to keep pressure static throughout repetitions
I am considering purchasing these for y own clinic for use wit our rehab patients.
@@ChrisRaynorMD Great stuff here... I spent 25 years in the SEAL Teams with 12 x ortho rehab periods over that time... last two rehabs were done with BFRT and I was blown away with the rapid-rehab aspect (they used KAATSU on me both times). It's GREAT to see this all getting traction with our USSOCOM physical therapists and trainers... while they use mostly KAATSU due to the automated Cycle function (new oxygenated blood every 30 sec cycle), which is based on Dr. Sato's life's work in Tokyo, they use Delfi as well... so it depends on what the provider likes best. Recommend trying both before making a large investment ;-) I'll drop a good video from Dr. David Chao.
Way too expensive. SAGA BFR or Smart Cuffs BFR for us poor people.
I am a retired Doctor and I use SAGA BFR cuffs as part of my routine at the Gym. I learned it from the Physical Therapists. If done correctly, it is safe and effective.
Been loving the videos Dr. Chris!
Glad to hear it!
This channel is gold man. I love the mix of humor, meme, and most importantly science. Need more of this in the world for sure. Also, ya, if people are considering this just work out harder. You're not Usain Bolt. Same thing when kids buy bigger motorcycles than they can use and aren't even twisting the throttle on the one they got. Just turn the throttle more!
Hey Chris, theres a few wrestlers you should check out, their names are Nick Gage and New Jack
I actually had a video about New Jack, but I had to take it down after he threatened to sue me over the content and some of the comments about him.
Good to know the risks, I have naturally low-blood pressure so this might not be the best for me
great video Dr. Raynor
Thank you!
Informative, entertaining and funny as always. Thanks.
How do you do this for pecs? Only works on extremities? I'll have to ask Micheal hutchence for tips on working the traps,SCM and scalenes... wait. On second thought....maybe the warning label should have his portrait. Hehe
Dr. Chris... great video man!! Thank you for helping get the word out!!! Is ok to drop a link to the 10-year long BFR cardiac rehab study done at University of Tokyo? I'm not sure what the rules are here ;-) Keep going with great content!!!
PLease do. The more links the better. Gives people more info!
Another great video
Glad you enjoyed it
We actually did something like this in a martial arts program I was in in the 90s...
We just used one hand to restrict blood flow to the other hand, after doing it for a while I noticed my hand was more muscular and veiny.
I’m not even sure why we were doing it.
Any top level competitor knows that at a certain Point you turned from science to the mysticism of it all. Sure it seemed a bit weird that Conor McGregor went to movement training… it is because Conor McGregor was at his peak as far as his striking, grappling, etc.
Yes there are no scholarly articles to support this training. There are Olympic level athletes who are winning gold medals like this.
They also swear by "cupping" and no FAP... neither have been proven scientifically. Im sure its more of a placebo effect.
Huh? There are loads of studies available freely on PubMed supporting BFR benefits for performance and rehab.
Here's a good video description by Dr. David Chao... uses BFR-T on all his ACL Repairs... actually, i think it will kick off the link... so if you don't see link in next comment, just do a "video" search for this: "What is KAATSU by Dr. David Chao"
Hi Doc, so glad to follow you. What about a video on 'Gangs of New York' movie's injuries? I guess It is a very good movie but not so correct about ... well, I guess none can survive with a knife in the stomach/guts in the 19th century but ... who knows
I was wondering if this could be useful for active recovery. Joe Mercola has been recommending BFRT for older individuals who have a hard time gaining muscle mass, and I think muscle mass is important to prevent insulin resistance.
Dr. looks totally different person with is beard. love it though !
CHARLIES DAD GOT A YT???? WELL IM BOUT TO SUB.
My everyday ortho you are awesome 😎
Quick question and totally off subject but would you mind doing a review of the injuries from the two Jurassic world movies please?
Good video.
Well explained doc
i came here to see if BFR was good for 🍑 growth but i just got my bicep tendon and some tears in my shoulder repaired soon as i heard you say it seems to benefit injury i tried it ! my arm feel so much better and i felt my muscle do something different .. crazy 😂👏🏽🔥
I freaking love your vide Dr. Raynor! Binge watching all week 😂
What would be the difference between this and training till failure? Both would increase lactic acid, decrease O2 etc? Is BRFT not just a pseudo method of training till failure?
Maybe less of an inflammatory response with BFR/KAATSU since you're working at a much lower weight/resistance. In other words, Dr. Sato can do the same workout in the PM he did in the AM since there is no DOMs effect... the dude is 74 by the way. That pick of him wearing the Navy SEAL shirt (that I gave him... see 2 min 53 sec) was taken on his 73rd birthday during COVID. Ya, right?? Crazy. He doesn't move heavy weights, just multi-joint movements at low weight and at higher KAATSU pressures. Pretty cool.
Can you review muscle scraping (i.e.: sidekick tool)
5:50
If they deem it performance enhancement and try to regulate it, I'm sure people would *stop* taking deca-burrito 💉 💊 seriously.
The rebound effect that we've seen about covid on a much larger scale already.
Isn’t this what ddp yoga has as well? I was recently diagnosed with Marfan syndrome can I do this?
Do body builder's do this before a competition to look more vascular?
No
They do.... 👀 ... other things
...to date, there haven't been extensive reports or studies. Or autopsies. Although I guess with advances in diagnostic testing and imaging, studying the effects need not be that drastic. Fortunately. I guess it must be a pretty challenging thing to come up with a quantitive and qualitive study to test though.
I have a whiplash injury which severely restricts my ability to train with any real kind of weight on my arms. Would you say this technique could be beneficial for me in training my arms?
Subscribed
yess ,how do we use the for size
the literature is grey on whether or not it actually does anything leaning towards being irrelevant. You can possibly ink out some metabolite accumulation that may or may not help with hypertrophy (the literature is grey on that too)
my concern with this would be an increased chance of a blood clot.... i guess that falls into the "how long can this be done for?" question.
You take the tourniquet off after each set, but the literature is grey on whether or not it actually does anything leaning towards being irrelevant. You can possibly ink out some metabolite accumulation that may or may not help with hypertrophy (the literature is grey on that too)
@@Jmack7861 doesn't seem like it's worth the hassle
@@hardleecure it’s not. It’s a gimmick
Edit: it’s a gimmick in terms of hypertrophy and strength training. Not sure about the physical therapy side
heard it's good for old people, to stop muscle mass loss and actually build some muscle with intense workouts. Read that restricts for 30 seconds and release for 5 is a formula that works but that uses an expensive automated cuff.
should be "without intense workouts"
reference, Dr Joseph Mercola
What’s the update now??
What if you are recovering from a fractured pelvis can you use it for recovery
No way to isolate that area. But if you are using it to keep the legs in shape while not weightbearing, I suppose it would work.
Hello
Wolfie's dad :)
Why wouldn't it be legal? lol The rules for Kaatsu are simple. Without risks?? YES! I'm 67 and have gained 2.5 inches in my biceps. No joint pain. Been using it for over a year. You really are trying to discourage people from a safe and effective protocal. Shame on you!
This is hardcore baby :)
Doctor.. Someone with a high blood pressure can they do BFRT training? Please advice.. Thanks in advance
That's a good question. I will look into it.
Dr Raynor,
Can you please comment on the xeroshoes guy???
His adds seem like he is banishing all forms of orthotics or modified shoes styles that are not minimalist shoes… Although im all for the possible benefits of minimalist shoes- Portraying his minimalist shoe style brand as the one solution for all foot and lower leg problems is like a mechanic saying that all car problems can be fixed with the same parts… It just seems illogical and untrue.
I’m second then 😏💨
4th actually..
Sets and reps please
See the link in the description.
More like Dr. Swole Thumbnailor
You go to uOttawa bro? 😂
So this is like medicinal e-stim?
Different process and probably more effective than e-stim.
What's up with these olympic remedy fads? I remember 5 years ago, cupping was the big trend for athletes at the games
They are looking for ANY advantage.
BFR, especially PBFR isn’t a fad. Department of Defense sunk over 40 mil into its research for wounded warriors. Just crossing over into the civilian market within the past 10 years. Thousands of research articles on its efficacy
the literature is grey on whether or not it actually does anything leaning towards being irrelevant. You can possibly ink out some metabolite accumulation that may or may not help with hypertrophy (the literature is grey on that too)
@@Jmack7861 The ‘grey’ literature is almost exclusively without using the appropriate cuff pressure for the UE and LE (which is 50% and 80% respectively). Check out the literature on PBFR which is featured in several orthopaedic journals.
@@JADC1111 are we talking about in a physical therapy context or hypertrophy and sports performance context? All the literature I’m referring to is in the realm of hypertrophy and sports performance, in which case the literature is grey and inconclusive.
only heard the first 46 seconds... this sounds soo bad and I don't even
know the heart and blood vessels like doctors do but damn.. this is just stupid.
Restricting blood flow while lifting heavy ass weights? That seems very strange and a recipe for the ultimate price.
Death
You don't lift heavy with it. You use 30% of your 1RM. Eg if your 1RM squat is 100lbs, then you use 30lbs with BFR.
first
Its illegal and not healthy