The Life Cycle of the Red Corpuscle

I found out how long my mountain-boosted pulmonary system lasted. Ten days.
During Taos Toolbox I spent two weeks at nearly 10,000 feet, which means my body was madly churning out red blood cells to carry all the extra oxygen I needed to survive.
When I came home, I figured I’d be bringing a ton of O2 with me, and I would be, like, Superman, at least till all my extra corpuscles kicked the bucket. And in fact I was. I blasted through my karate class the other day. When I was running on the elli...