From high knees to squat jumps, these five at-home interval workouts can help improve your VO2 max – a key measure of heart ...

VO2 max isn’t just a flashy number on your smartwatch—it’s one of the most powerful indicators of your fitness and long-term health. From predicting cardiovascular health and lifespan to guiding ...

"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 ...

VO2 max seems like the biggest buzz word used in the running community right now—but why? What makes that number glaring back at you on your smartwatch so crucial, and why can’t runners stop talking ...

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 this episode of The Amazing Runner’s World Show, Jeff is joined by Kristen Wagner, senior health and fitness editor, to talk about Jeannie Rice’s incredibly high VO2 max. The world record-holder ...

See how your cardiovascular fitness stacks up against your running peers ...

Add Yahoo as a preferred source to see more of our stories on Google. VO2 max testing requires a mask to measure oxygen intake and carbon dioxide output to determine your cardiovascular fitness.