"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 ...

VO2 max seems like the biggest buzz word used in the running community right now—but why? What makes that number glaring back at you on your smartwatch so crucial, and why can’t runners stop talking ...

VO2 max is often referred to as a key marker of fitness. It’s the measure of the maximal amount of oxygen your cells can take in and use during exercise. Because VO2 max is so closely tied to running ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Running at the best of your ability is somewhat of a numbers game. To hit new PRs, you’ll want to keep ...

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 ...

You might think the exception to that is the speedy part of interval training, which sees runners switch between jogs and ...

As a teenager, Oskar Svendsen emerged as one of the sport's most promising talents... then he disappeared. Tom Davidson finds ...

A new study in Medicine & Science in Sports & Exercise finds that a 7 out of 10 effort level is optimal for VO2 max ...

We all sit somewhere on a spectrum between speed and endurance. Some athletes thrive on long, steady miles, while others ...