Your watch’s VO2 max isn’t perfect, but you can improve its accuracy with better data and heart-rate tracking.

VO2 max is a trendy stat for measuring your fitness, and it can help improve longevity too. Having a higher VO2 max is good, but more important for health is how the number changes over time.

This article is purely theoretical. Some readers will think that the theory is obvious on its face, and others will think that it's wrong. The joy of talking about training theory at the intersection ...

If you want the best measure of your fitness, it’s time to check out your VO2 max. VO2 max is the maximum amount of oxygen your body can utilize during intense exercise, measured in milliliters of ...

VO2 max, the measure of how much oxygen the body consumes during exercise, has become a ubiquitous tool for professional ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Until recently, VO2 max testing has been inaccessible to most everyday athletes. Unless you had an in ...

By most measures, Norwegian triathlete Kristian Blummenfelt is the standard of peak performance in athletics. He won the gold ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." A new study, involving nearly 800 older adults, points out the factors most associated with higher VO2 ...

A.V. Hill was a 4:45 miler and already had a Nobel Prize for work in muscle physiology when he and Lupton began studying VO2 max. The experiments involved subjects running around Hill’s back garden in ...