2. Don't drink raw water. Boil the water until it gets warm. You can drink cold boiled water in summer, and the amount of water you drink every day is 2000 ~ 2500 ml.
3, do not drink water before meals, do not drink water when eating, do not drink a lot of water two hours before going to bed, it is best to drink a cup of boiled water on an empty stomach after getting up every day.