The end of 2011 will be my 20th year of being cancer free. The aggressive chemotherapy regiment I was enduring left me exhausted and nausea when just taking a couple of steps.
Reading about high altitude trekking for my two treks this year, Mt. Whitney being the first, it seems like high altitude can have similar effect on folks. During my treks, maybe having already gone through something similar will be to my advantage.

Ejecting a little humor here on a most important subject and that is prevention.