Lean body mass in pounds, a measure of healthy body composition, represents the total weight of your body minus stored fat. For instance, if you weigh 150 pounds and have 20% body fat, your lean body mass would be 120 pounds.
Determining lean body mass is crucial for managing weight, assessing fitness progress, and optimizing nutrition. In the 1800s, scientists first developed methods for measuring body composition, laying the groundwork for today’s precise techniques.