 There are over 600 muscles in the human body. The exact number varies depending on the definition of a muscle. The human body contains 360 joints of which 66 are in the foot, meaning that your feet contain about 20% of all your joints. There are also over 600 muscles in the human body with around 40 muscles in the feet and 4,000 tendons and 900 ligaments in the human body. But let's get back to the feet.