This is a popular feature on the Apple Watch Ultra 3, Apple's most rugged smartwatch. But is this data actually useful? Apple ...

The metric is available on most fitness trackers. Here’s what it means. By Talya Minsberg You just finished a long, hard bike ride. But how hard was it, exactly? That depends on what you measure: How ...

When it comes to running these days, wearables have become a part of the “uniform.” If you sift through race photos, you’ll probably see both recreational and professional runners looking down at ...

Cognitive fatigue manifests when the brain is overworked or stressed from prolonged periods of mental effort. This form of fatigue can impair attention, decision making, reaction times, and emotional ...