Ordinarily, trekking into high alpine zones requires days or even weeks of altitude acclimatization to help you adjust to the fewer oxygen particles you'll be taking in each breath. Weird things ...

The performance-enhancing altitude mask that Olympic hopeful Sivert Guttorm Bakken was wearing when he was found dead this ...

Human athletes have long utilized training at high altitudes to improve their oxygen-carrying capacity, so it should come as no surprise that trainers of equine athletes have tried similar methods.

There’s a reason elite runners flock to towns such as Park City, Utah (altitude 6,936 feet above sea level), Flagstaff, ...

Leading up to the Olympic trials earlier this year, local running star Max King slept in an altitude training tent almost every night. The tent fits over a mattress in a spare room of his house, next ...

If you're a competitive athlete, or even just an active person who wants to get in better aerobic shape, go up to the mountains ... If you’re a competitive athlete, or even just an active person who ...

Cyclists and long-distance runners have historically trained at higher altitudes (between 6,000 and 10,000 feet above seas level) then returned to sea level to improve their athletic performance. But ...

The Local newsletter is your free, daily guide to life in Colorado. For locals, by locals. It’s on the third of 10 hills on the stationary bike that my heart starts to pound heavy in my chest. My legs ...

PLEASANTON — LeBron James and Michael Phelps use it. Tiger Woods has one in his home. And now, Bay Area gym rats can soar to new heights of cardiovascular fitness in the largest AirFit altitude ...