First of all, you have to have good living habits, do not smoke or drink, and work and rest normally; Secondly, exercise more, and you can run, play ball and swim regularly. Swimming can make you thin. If time and energy are really limited, you can choose to walk for 20 minutes every day, or climb the stairs instead of taking the elevator. Finally, of course, it is to control diet. Have a good breakfast, eat a little Chinese food, eat less dinner, and drink less desserts and carbonated drinks. Bottom line: Eat less and exercise more, go to bed early and get up early.