People can't drink water because of thirst. Adults should drink water at least six times a day. Drinking water on an empty stomach is the most effective, and water will circulate directly from the digestive tract and be absorbed by the body. At the same time, drinking more water can eliminate sweat and urinate more, which can not only lower the body temperature, but also eliminate toxic substances in the blood.

Usually we lose 300 ~ 400 ml of water through breathing and skin evaporation every night. Therefore, when you wake up in the morning, drinking a large glass of water first can not only replenish the water lost by body metabolism and wash the empty stomach, but also effectively dilute blood, reduce blood viscosity and prevent the occurrence of cardiovascular and cerebrovascular diseases. Fruit and vegetable juices are nutritious and can replenish water, so you can drink more. Because all kinds of functional drinks contain a lot of additives, you should be careful when choosing them. Some additives even increase people's metabolic burden. Children should try to drink less carbonated drinks. In addition, strong tea and salt water cannot replace drinking water. Don't drink drinks below 5 degrees Celsius. It is best to drink cold boiled water of about 10 degrees Celsius to cool down and quench your thirst. You should have a drink of water after summer exercise.