However, it is necessary to master the specific drinking time of the two kinds of water. If you don't master it well, it will be harmful to your health. For example, it is suggested to drink boiled water on an empty stomach in the morning, because drinking boiled water on an empty stomach can excrete some residual substances in the body, and at the same time, it can dilute the sodium-containing components in the blood, thus lowering blood fat and blood pressure. Drinking boiled water on an empty stomach in the morning can also promote defecation and prevent constipation. It is recommended to drink tea water one to two hours after meals, but it is recommended to drink light tea instead of strong tea, because drinking strong tea will do harm to the body.