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 ...

A body composition scale analyzes how electrical signals flow through your body, estimating how much of your total weight is fat-free mass compared to body fat. You may not always get every answer you ...

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.