PUNCHING BAG
A punching bag or punch-bag is a sturdy bag designed to be repeatedly punched, for use in physical exercise or stress relief in order to improve one of three areas: physical strength, aerobic fitness, fitness strength or punching technique. Punching bags have been used in martial arts and swordplay for as long as there has been a written history of military training. A similar apparatus in Asian martial arts include the Okinawan makiwara and the Chinese mook jong, which may have padded striking surfaces attached to them. These are typical exercise material known to all including all practicing athletes to help improve muscle strength and agility.
