Thanks to the ever-improving world of fitness trackers and apps, you've never had more access to personal health data. But which of the dizzying number of markers and metrics should you really be ...

Knowing the correct body fat percentage for women might sound a little too heavy on the science for the non-athletes of us ...

For bodybuilders and fitness enthusiasts, changing body composition often reflects hard work and discipline—but knowing body composition is useful for anyone, and for more than just bragging rights.

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images The number on the scale does not tell the whole story. Your body weight does ...