Generally, the masseter likes to eat hard things, such as chewing gum and betel nut. This chewing action is very easy to exercise the masseter muscle, which will gradually lead to the enlargement of the masseter muscle. You must get rid of the habit of trying to lose weight, and then eat more potassium-containing things. Potassium is a sharp weapon to eliminate masseter muscle. Yan Jia fruit is rich in potassium, which can be absorbed by your face during chewing, thus making your face thin quickly. There is also a correct massage that helps to thin the masseter muscle, but massage needs long-term persistence to be useful and troublesome.