Rice soup, porridge soup, high protein powder, biscuits with sufficient fiber content (but not too rich), and staple foods can also be fine noodles, noodles, steamed bread, flower rolls, cakes, steamed bread, wonton, bread, rice, etc. Because most people don't eat too much for breakfast, milk can be replaced with soybean milk or honey water. And the jujube Jiang Shui I mentioned. Remember to drink water when you get up early every morning.