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, ...

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 is VO 2 max? VO 2 max is short for "Volume of O2Maximum" where O2 stands for oxygen. Actually, it's supposed to be written as "VO 2 max" where the V stands for "Volume per unit of time." This ...

Increasing your vo2 max can be simple, but that doesn't mean it's easy. It has many names: "maximal oxygen consumption," "maximal oxygen uptake," "peak oxygen uptake," "maximal aerobic capacity." ...

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 ...

Most of us are curious about how fit we actually are. The gold-standard answer usually comes from a sports lab, where aerobic capacity and other markers can be measured directly. But there are also a ...

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 ...

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 ...