Eat less staple food, greasy, three meals a day. The quantity is less than usual. Drink more than 3L of water a day, properly supplement salt, and do aerobic exercise for more than 1 hour every day, preferably for 2 hours, preferably in summer, for better results (not in the scorching sun). The best time is to do exercise in the evening after dinner, 65,438+0 hours, and constantly replenish water during exercise to avoid dehydration.