Lemon, digest and clean up gastrointestinal waste, help defecate. Pectin contained in hawthorn can adsorb the fat and toxin on the intestinal wall. Grapefruit has diuretic effect, which can effectively remove edema. Strawberries contain a lot of cellulose, which can relax the bowels. Apples are rich in potassium, which can help us to expel excess salt and water from our bodies. Tomatoes are extremely low in calories and rich in dietary fiber. Pay attention to eating fruit in moderation, three or four hours before going to bed, and pay attention to strengthening exercise after meals.