Don't go on a diet for the first time, don't exercise blindly for the second time, don't eat and lose weight for the third time, and change your fattening physique for the fourth time. Lose weight first because of their physical problems, because some people lose weight first and then lose weight. If you want to lose weight, you should still refer to some successful examples of losing weight (Jia Jinhong's History of Blood and Tears).