This muscle makes up the bulk of your chest and helps in push-ups and swimming.

This muscle group is located on either side or your torso under your rib cage. It is responsible for helping you twist as when you swing a bat or tennis racquet.

This muscle is located in your lower posterior (back) region of your torso and joins your spine to your shoulders. It helps you pull, swim, and breath.

This muscle group is located on the lower anterior (front) of your torso and serves as a belt for your stomach area. They support your back and help you do sit-ups.

This muscle is located above your arms where your shoulders are and helps you throw and is one of your main lifting muscles.

This two muscle group is located on the anterior (front) of your upper arms and helps you pull.

This three muscle group is located on the posterior (back) side of the upper arm and helps you push things and write.

This fibrous group of tendons connects your calf muscle to your heel. By pulling on your heel it helps you walk, run, and stand on your toes.

This muscle is the largest muscle in the body and is located on the posterior (back) of your bottom. It helps you stand up.

This muscle is located on the Anterior (front) side of the upper leg. It is actually a group of four muscles and helps you walk, jog, jump, and squat.

This leg muscle is located above the knee on the posterior (back) of the upper leg.

This muscle is made up of two large muscle groups and is located below the knee on the posterior (rear) of the legs. It helps you run, squat, and jump.