Lean muscle refers to muscle that doesn’t have a lot of fat around it or within it.

Lean muscle mass is very important. It’s not just about looking great or being stronger, sufficient amounts of lean muscle mass are actually critical for building a healthy life over the long-term.

**Formula to calculate lean muscle mass.**

**Example:**

Calculate the lean muscle mass of a lady whose body weight is 188 Pounds and her percentage body fat is 15%.

Therefore, the lean muscle mass of the lady is 159.8 Pounds.