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

I’m not surprised that Garmin did well, but I am surprised by some of the watches at the bottom of the list. Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal ...

Essentially a measure of your cardiovascular fitness or aerobic capacity, your VO2 max is often considered a must-know metric if you’re a runner – especially if you’re looking to improve your running ...

VO2 max has become ubiquitous in fitness circles. But what does it measure and how important is it to know yours? By Talya Minsberg Talya Minsberg took a VO2 max test while reporting this story. She ...

Your VO2 max score offers invaluable insights into your health and fitness. A 2018 cohort study involving more than 120,000 participants found that the better your VO2 max, the lower your risk of ...

I have, at my disposal, at least nine different devices that can estimate my cardio fitness. They all put it in terms of a number scientists call VO2max. But the only way to find your actual VO2max is ...