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

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 ...

Many people run for the endorphins and sense of achievement rather than the statistics. However, for several runners, dialling into fitness metrics is a big part of the process, as it helps to guide ...

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, ...

HOW MUCH DO you know about your body? Yes, you're intimately familiar with all of the unique features and quirks that make your body you—the scar on your shin from the box jump accident in the gym, ...

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 ...

Vanessa is a lead writer at CNET, reviewing and writing about the latest smartwatches and fitness trackers. She joined the brand first as an on-camera reporter for CNET's Spanish-language site, then ...

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 ...

Apple Watch is about to gain new features when iOS 14.3 lands in the next few hours. It will have support for Apple Fitness+, the new subscription service which launches tomorrow, along with a new ...

Well, today, the FDA in the US has approved the requested ECG certification. The news was shared directly to the users with a firmware update; which is rapidly hitting all US users. The ECG monitoring ...

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 ...