This can speed up the metabolism of the human body and expel harmful substances from the body. Boiled water is the water that people drink the most in daily life. It's bland and extremely common. But it is such a cup of boiled water that has a very important conditioning effect on the physiological mechanism of the human body. Drinking a cup of warm water on an empty stomach in the morning is good for people's health. It can not only dilute blood, reduce blood viscosity, promote blood circulation, but also reduce the risk of thrombosis. It is particularly important for middle-aged and elderly people to prevent cardiovascular and cerebrovascular diseases at the peak of heart disease. Drinking a cup of warm water in the morning can not only quench thirst and diuresis due to the physiological loss of water in the body after sleeping at night, but also make the skin smooth and tender.