Bio Hacks That Work. No, Really. On Aging Exceptionally Well in a Well-Maintained Body
I let out a banshee scream into my facemask and put every ounce of effort into pedaling. I could barely breathe. The air was equivalent to that at the top of Kilimanjaro.
I’ve been there. Man, that air is thin.
My blood oxy level dropped to about 74%. That’s well into the hypoxemia range…