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 ...

For general fitness and health, men should aim for age-adjusted VO2 max scores that put them above average. This will ensure you are maximizing reductions in all-cause mortality from having a higher ...

These brief, intense workouts can strengthen your heart and boost longevity.

Running at the best of your ability is somewhat of a numbers game. To hit new PRs, you’ll want to keep tabs on all kinds of stats, like distance covered, pace per mile (or interval), max heart rate, ...

"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 ...

When runners talk physiology, two terms tend to dominate the conversation: VO2 max and lactate threshold. Although the two metrics are related, they are not the same – and they shape performance in ...

Discover how just four minutes of supramaximal interval training can trigger powerful cardiovascular, metabolic, and ...

Here’s a graph showing the fraction of workout time spent at above 90 percent of max heart rate (black bars) and above 90 ...