Retired Olympic skier Juha Mieto earned the nickname ‘Nordic Giant’ thanks to his freakish fitness stats – from a VO₂ max near 90 to a resting heart rate in the 30s and the strength to squat 200kg for ...

Kinotek assessments measure mobility using 3D visuals. I learned how my desk job is wearing down my body — and strength-training workouts could make it worse.

Unfortunately, VO2 max decreases a lot faster when you stop straining than it increases with training. “Early on, you can see ...

Vitomir Maričić spent half an hour underwater fighting carbon dioxide. Here’s how he did it, and how you can fend off CO2 buildup to run farther.

We've tested and reviewed products since 1936. Read CR's review of the Apple Watch Series 7 GPS (45mm) smartwatches & fitness ...