Shakira's personal trainer Anna Kaiser shared the secret to her client's incredible physique and fitness at 49 – and it's not ...

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 ...

A 26-year-old’s VO2 max is classed ‘excellent’ despite a non-extreme lifestyle. From interval runs to everyday walking, her simple habits raise bigger questions about longevity. On a fitness tracker, ...

The metric is trendy and telling, but misconceptions abound.

While most runners set a goal to get faster, an even more pointed (and beneficial) objective is to improve your VO2 max. Not only does this metric—a measure of how much oxygen you can take in and use ...

The test evaluates the maximum amount of oxygen the body uses during intense physical exercise.

The Apple Watch’s array of different health features has alerted countless users to potentially life-threatening problems over the years. This week, a new report published in the Interactive Journal ...

VO2 max is an intimidating word for an easy-to-understand biometric: It’s how well your body uses oxygen when you push yourself. Short for “maximal oxygen uptake,” it’s been the gold standard for ...

A.V. Hill was a 4:45 miler and already had a Nobel Prize for work in muscle physiology when he and Lupton began studying VO2 max. The experiments involved subjects running around Hill’s back garden in ...

Maximal oxygen uptake, or VO2 max, is perhaps the single best predictor of long-term health and longevity. It’s also the key trait that distinguishes elite endurance athletes. We know all this from ...

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 ...