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At altitude, there is not less oxygen, there is a drop in atmospheric pressure which reduces the ability for gas exchange when we breathe. Please get the basics right. There is a lot of misinformation and poor advice in this video.
the bummer is you haven't tried any of these....seems you are just spurting off some librarian knowledge....not very helpful Rich Roll
At altitude, there is not less oxygen, there is a drop in atmospheric pressure which reduces the ability for gas exchange when we breathe. Please get the basics right. There is a lot of misinformation and poor advice in this video.
the bummer is you haven't tried any of these....seems you are just spurting off some librarian knowledge....not very helpful Rich Roll