Originally Posted by
Alias530
Elevation will do it too... I live at sea level and went to 7,500ft last weekend. Not to exercise but just as a mini vacation. Just casually walking felt like endurance pace cycling and walking up 2 flights of stairs briskly felt like tempo work.
True. I'm a sea level dweller and I made the mistake of not realizing that alcohol will affect you more quickly at elevation too. 4 beers in a hot tub at 9,000 feet in Colorado = falling face first into the snow from wooziness when attempting to stand up. Climbing up and down the stairs in that house made me feel like I had jello legs.