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

VO2 max has long been a measure of aerobic fitness valued by endurance athletes, but it’s not a stat that should just be of interest to keen sportspeople, because a high VO2 max is also linked with ...

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

Discover which fitness metrics matter most for meaningful progress. Learn how expert assessment of posture, mobility, ...

Researchers have developed a method for measuring overall fitness accurately on wearable devices -- and more robustly than current consumer smartwatches and fitness monitors -- without the wearer ...