I suffered the first year out there with some pretty severe headaches. Since then, I' ve done much better by preparing and taking time once I get there. I usually take an aspirin a day, walk alot of hills, and drink a ton of water. Water will do alot for you as it' s very dry out there. I usually stay at my friend' s place in Denver one night before heading to the mountains. Plus, when we arrive, I move really slow with everything I do and don' t do much the first day other than setup camp. Take your time and don' t do too much the first day. Drink water until you can' t drink anymore...then drink some more....