Originally Posted by
tetonrider
people lose ~10% of sustained aerobic capacity when going from 0 to 7,000'. one might think that going from 7,000 down to 0 would result in an 11% gain
That would be ridiculous! If you just drove up and down a mountain you would lose 10% and gain 11% on each round trip! You would just get stronger and stronger!
(btw, if you ever want to spend a fun afternoon, try explaining the 10%/11% thing to my wife)