Alex Hutchinson is a National Magazine Award-winning journalist and Outside’s Sweat Science columnist, covering the latest research on endurance and outdoor sports. A.V. Hill was a 4:45 miler and ...

This is Your Quick Training Tip, a chance to learn how to work smarter in just a few moments so you can get right to your workout. If you’re an endurance athlete, you’re likely familiar with the term ...

On TikTok, VO2 max is going viral as the key to improving your endurance during a workout. In short, you can think of this metric as the maximum amount of oxygen your body uses during exercise – V ...

Plenty of fitness trackers these days will tell you your VO2max, sometimes referring to it as a “cardio fitness” score or telling you that you’re fitter than a certain percentage of the population.

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 ...

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 ...

Until recently, VO2 max testing has been inaccessible to most everyday athletes. Unless you had an in with an exercise physiology lab, you had to rely on back-of-the-envelope calculations or wearable ...

If you think of ways to measure your overall health, certain benchmarks likely come to mind. The bloodwork you get done at your annual physical, maybe. Your body mass index. Perhaps how much you can ...

RUNNING TO THE best of your ability is something of a numbers game. To hit new PRs, you’ll want to keep tabs on all kinds of stats, like distance covered, pace per mile (or interval), max heart rate, ...

The burn. The Bane mask. The bleak possibility of being waterboarded by vomit. Whether you’ve wheezed through one first-hand, or cocked a cautious eyebrow from afar, more and more men are learning of ...

Danish medical device spinout VentriJect aims to revolutionise fitness assessment by providing a fast and accessible method for measuring cardiorespiratory fitness (CRF), particularly VO2 max.