Exercising back muscles is beneficial to prevent and correct hunchback. Back muscles stretch and straighten the curved spine. Similarly, if you have a hunchback or a slight hunchback, if you don't have a good back muscle group to compete with, you will also aggravate the hunchback. If you practice seriously, elastic belt will exercise your arm strength and back deltoid muscle, which has certain effect … but the muscles should be fully developed, as I said just now …