Living conditions are good now. Some families eat chicken, duck and fish three times a day. Children eat snacks every day and drink a lot of milk before going to bed. Many parents want to eat more good food, and children must be in good health. Unexpectedly, children often get sick because of haste makes waste. Chinese medicine believes that "children who want to be safe at four o'clock often get hungry and cold." Children with weak constitution should have a vegetarian diet, not too full, and should not blindly supplement high-calorie protein powder and other substances.