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.

Smart scales track changes in your muscle mass, body fat percentage and other health metrics — but how do smart scales work, and how accurate are they? When you purchase through links on our site, we ...

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 ...

Body mass index, or BMI, has long been criticized as a flawed method for measuring obesity — and now a group of experts is sharing new recommendations. BMI is a formula that uses a person's height and ...