| | Conditions Treatments | Muscle Strain How much weight do muscles take up in your body? Skeletal muscle makes up about 35-40% of your body weight, or about 60-70% of your lean body weight. Muscle Strain - Related Articles HIPAA Regulations for Patients Did Princess Diana have a blood clot? How to Sanitize a Travel Toothbrush Holder Hand Rehabilitation Exercises Things to Do for a Seizure Can you find out if have hiv as soon get it? How can I properly clean my dentures at night?