Muscles account for what percentage of one's body weight?

30 to 40 percent of a healthy person's body mass is made up of skeletal muscle.

Muscle mass or skeletal muscle, which accounts for about 40% of the total weight, is the most important component of MLG and is a reflection of the nutritional status of the protein. Bone mass, which forms the bones, constitutes about 14% of the total weight and 18% of the MLG.