Plain boiled water, also called cold boiled water, is the alkaline water that people drink the most in daily life. It is tasteless and extremely common, but it has a very important conditioning effect on the physiological mechanism of human body. Drinking a cup of warm water on an empty stomach in the morning is good for your health. For middle-aged and elderly people, it can not only dilute blood, reduce blood viscosity and promote blood circulation, but also reduce the risk of thrombosis and prevent the occurrence of cardiovascular and cerebrovascular diseases at the peak of heart disease. For young people, because the water in the body decreases after sleeping at night, it can quench thirst and diuresis, and also make the skin smooth and tender. Drinking more boiled water is good for losing weight. Secondly, losing weight requires a reasonable diet plan and persistent exercise.