Your VO2 max is one of the key metrics for fitness and for showing your potential as a runner. As a measure of your maximum aerobic capacity, it is a gauge of how efficiently your body uses oxygen ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." FOR ABOUT A a year, an exercise physiologist I know kept offering to do a VO2 max test on me. For more ...

Tracking fitness data is key for assessing your health, designing the right training program for your goals, and gauging your progress throughout your training routine. When it comes to measuring ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Plenty of fitness ...

NASA astronaut Sunita Williams, Expedition 32 flight engineer, performs a VO2max test while using the Cycle Ergometer with Vibration Isolation System (CEVIS) in the Destiny laboratory. Disclaimer: ...