Muscles

In the human body there are over 600 muscles. It takes 17 muscles to smile and all 43 to frown! Every step you take needs 200 muscles to help it move. To speak it takes 72 muscles.  The strongest muscle in your body is the tongue.  The smallest muscle is the stapedius which is in the ear. Your heart is a muscle. Muscles take up almost ½ of the body weight.