Wondering what your Oura Ring or Fitbit knows about you? Here's what happens to your sleep data.

Donating blood causes a small, brief drop in blood pressure. Learn what to expect, who can donate, and how to avoid feeling ...

But when flying at altitude, the air only contains the equivalent of 15% oxygen. To compensate, the body increases the number ...

Learn about a good walking heart rate and what factors affect this number. Plus, calculate your resting and maximum heart ...

Why an 80/20 training split works for the pros and could for you, too ...

BALTIMORE — A warming Chesapeake Bay may mean more days of swimming, but it brings a greater threat from a flesh-eating ...

Prolonged heat is driving fish deaths across Minnesota, with water over 86°F and 212 mortality reports as the DNR urges the public to report events and help ...

From yoga studios to boutique gyms, workouts performed beneath infrared heating panels have become a visible fitness trend.

Ravens’ Derrick Henry opens up about cheat meals, dismisses retirement talk ...

It’s not yet the end of July and we’re already welcoming the fourth heatwave of summer, with this year breaking the record for the highest-ever number of days at 34C. These sweltering temperatures ...

I never bought an Oura Ring. I did not need to. My Samsung was already in my handbag, quietly keeping score. I cannot ...

I spent 2 months testing Google’s £85 Fitbit Air to see if it could replace my Whoop - Google’s ultra-thin screen-free ...