After a night of water evaporation, the water in the body gradually decreases, and it is especially necessary to replenish water in the morning. Boiled water has no heat, which can not only effectively replenish the lack of water in the body, but also dilute the viscosity of blood and promote blood circulation. For most people, it is appropriate to drink a cup of boiled water in the morning. Drink water in the morning, it is best to drink the same boiling water as room temperature, and drink warm boiling water when it is cold to minimize the irritation to the gastrointestinal tract. It is found that boiled water cooled to 20-25℃ has specific biological activity, which can easily penetrate cell membrane, promote metabolism and enhance human immune function. People who are used to drinking warm and cold boiled water have higher deoxyenzyme activity in their bodies, good metabolism, less accumulation of lactic acid in muscle tissues and are not easy to feel tired. But you should rinse your mouth before drinking water. Therefore, it is recommended not to rush to eat breakfast after getting up in the morning. It is suggested to drink 500-800ml warm water immediately, which can not only replenish the water lost at night, but also clean up the intestines. But if you switch to honey water, the effect will be better and the nutrition will increase.