Altitude sickness is an illness that develops when the body doesn’t have time to adapt to the decreased air pressure and oxygen levels of high altitude—defined as any area 8,000 ft. above sea level. Symptoms include dizziness, fatigue, shortness of breath, and loss of appetite—wickedly similar to a brutal hangover.
Learn why altitude training gives you the best bang for your buck.
How altitude training can help boost your red blood cell count, so that you can perform better in workouts and on race day
We break down cost of high altitude training camps for runners and cyclists in Flagstaff, the Rockies and Kenya
How to use altitude training to maintain fitness while recovering from an injury
7 tips so you can do to better prepare for attempting a high-altitude summit
5 must-do bucket list races from around the world for for endurance athletes