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

If it seems like everyone in your run club is talking about VO2 max these days, we wouldn’t be surprised. This metric—which is essentially a measure of your cardio fitness—is a zeitgeisty topic, ...

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 ...

If you're a fitness fiend or working to improve your health, you're probably always looking for ways to run faster and farther, train harder and push your limits. You might even already track a number ...

What exactly is VO2 Max? Simply put, VO2 Max is the maximum volume of oxygen your body can use during intense exercise. Think of it as your body’s engine efficiency – the more oxygen your body can ...

Many people enjoy running for the endorphins and sense of achievement rather than the statistics. For several runners, though, taking stock of their fitness metrics is part and parcel of the process, ...

VO2 max is among the most elusive terms in fitness. You may have heard of it, as it’s often heralded as the number that defines your cardiovascular fitness. Yet for many, the concept is confusing and ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Plenty of fitness ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Whoop, the screenless ...