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

I was having a great conversation with one of our fit, longtime members about VO2 max. I told him that I should do a column on it. When you Google VO2 max, it states: VO2 max is the measure of the ...

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

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 ...

Running to the best of your ability can feel like a numbers game. To hit new PBs, you’re probably under the impression that you should keep tabs on all kinds of ...