This easy test can help you get a gauge on your VO2 max—without a watch.

When it comes to understanding your fitness and overall health, VO2 max is often heralded as the most important metric. So if you notice a decline in your VO2 max, it’s only natural to be ...

When runners talk physiology, two terms dominate the conversation: VO2 max and lactate threshold. The two metrics are related but not the same, and they shape performance in different ways. Naturally, ...

I’ll never beat the “runners can’t shut up about running” allegations – I’m always rattling on about how ‘Jeffing’ upped my race pace and how helpful strength workouts have been for my recovery. And ...

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 ...

"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 ...