Before You Die: Hit Rock Bottom at Everest Base Camp by Philip Sen

Getting this high hurts like hell. Altitude sickness can hit anyone at any time, irrespective of age, gender or fitness. Your head may be pounding, but with the forbidding peak of Everest just penetrating the heavens before you, but so what? Standing here, three miles above sea level, it's worth it. You're on top of the world.