The Difference: Athletic bodies have muscle tone and definition that skinny bodies lack, but significantly less mass than ...

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 ...

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.

There are various types of body composition tests (more on these below). Still, each one measures the percentages of fat and fat-free mass (muscle and bone) in the body. Knowing these percentages can ...

Many of us hyperfixate on the number on the scale as the ultimate predictor of health status. However, a lesser-discussed measurement may actually predict health and longevity more ...