When you think about how fit you are, you might think about how far you can run or how many push-ups you can do. Or maybe you think about health metrics like your resting heart rate or heart rate ...

Hardcore endurance athletes have tracked the metric for decades, but it is increasingly touted as a measure of fitness and health for the average person.

High-intensity interval training is important, but coming back to your breath can be crucial to helping you train.

A higher VO2 max translates directly into enhanced physical performance across various activities. This improved oxygen utilization capacity manifests in multiple ways. Athletes with higher VO2 max ...

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 ...

In one clip, he’s standing on a treadmill in a lab with his face covered by a mask and eyes on a monitor displaying his performance. The display shows his VO2 max at 101.1. To put that into ...