Your watch’s VO2 max isn’t perfect, but you can improve its accuracy with better data and heart-rate tracking.

If you're an endurance athlete, your lactate threshold can be an incredibly useful training tool – but what exactly is it, and how can you measure and use it? Lactate is created when muscle tissue ...

A doctor to elite athletes shares his longevity formula, with Zone 2 cardio and smart interval training. Understanding your VO2 max and lactate threshold can help you train smarter. Raising your ...

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 ...

VO2 max, the measure of how much oxygen the body consumes during exercise, has become a ubiquitous tool for professional ...

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 ...

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 ...