Lean Body Mass basically refers to the total weight of everything in your body other than fat. It includes your muscles, bones, and all the organs. This value is used to calculate the dosage of some medicines and also in formulas to assess the functioning of certain organs. While the formula to calculate the lean body mass is scientifically approved, it must be remembered that the values can vary depending upon an individual's muscle mass and bone density.

One can increase one's lean body mass by focusing on the correct dietary and exercise regimen. This will strengthen the musculoskeletal system and also build the overall stamina of the individual.