If you want the best measure of your fitness, it’s time to check out your VO2 max. VO2 max is the maximum amount of oxygen your body can utilize during intense exercise, measured in milliliters of ...

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 ...

Jakob Roze, CSCS, is a health writer and high-end personal trainer. He is the founder and CEO of RozeFit, a high-end concierge personal training practice and online blog. VO2 max measures how much ...