Exercising the chest muscles can form tighter muscles that support the appearance. Not only that, training the chest muscles also helps you stay healthy and strong in old age later. However, the main thing from training the muscles of the body is that it can increase the body's metabolism. Muscles that experience contractions make the body more sensitive to the hormone insulin and increase the ability of muscles to use glucose. As a result, the body helps in burning blood sugar. This situation can ultimately protect you from the risk of diabetes. Getting To Know The Chest Muscle In the upper chest, the most dominant muscle is the pectoralis major muscle. The shape resembles a stretched fan. These muscles keep the arm attached to the body. Complaints that often occur in this area are bruises, chest pain and reduced muscle strength, but injuries are very rare. Under the major pectoralis muscle there is a minor pectoralis muscle. In addition there are also various other muscles