yeah, like everyone else has said, probably the key to adjusting to altitude is keeping hydrated. along w/ that, make sure to eat often throughout the day. and there's nothing wrong w/ going to bed 'early.' my routine for out west: up early enough to be out when lifts open, ski all day, start drinking right when you get off the mountain, then by 10pm you've a day full of skiing and partying, and you can still get a full night's sleep. nothing wrong with that!