Drink about 300ml of warm boiled water in the morning on an empty stomach is more appropriate, not only to replenish the water lost at night, but also to dilute the blood, promote blood circulation, and at the same time can clean the intestinal tract, remove toxins produced by human metabolism, lubricate the intestines, and promote defecation. Normal people drink about 2L of water every day, drink about 300ml of warm boiled water in the morning is more appropriate, drink too much water in the morning on an empty stomach will increase the burden on the gastrointestinal tract, dilute gastric juices, affecting digestion, drink too little water can not play a role in the health of the body. Drinking about 300ml of water in the morning plays a very important role in the functioning of the body as a whole, if the body has kidney dysfunction or other metabolic diseases, the amount of water needs to be decided under the guidance of a doctor to avoid changes in the amount of water consumed to affect the condition.