Maybe your smartwatch has been telling you your VO2 max for a while now, but you’re not sure how accurate it is. Or maybe you’ve recently been targeted by social media ads for fancy running labs ...

If you’re part of the online running community, you’ve probably seen runners flexing their VO2 max numbers. If you wear a running watch, you’ve probably also aware of your own VO2 max—maybe you’ve ...

Maximal oxygen uptake, or VO2 max, is perhaps the single best predictor of long-term health and longevity. It’s also the key trait that distinguishes elite endurance athletes. We know all this from ...