It's listed at half the price of an Apple Watch or Garmin, with a battery that can last almost a month. So, what's the trade-off?

VO2 max is an intimidating word for an easy-to-understand biometric: It’s how well your body uses oxygen when you push ...

Choosing your pace based on the physiological transition from easy to hard is more effective than calculations based on ...

Everything you need to know about high-intensity interval training to help you hit the ground running in 2026—including a low-impact HIIT workout alternative.

OK, maybe not forever. But this four-workout-per-week plan can reduce your risk of death by about a billion percent. And it ...