The best time to drink water is after getting up in the morning. It is recommended to drink a cup of warm water first. Half an hour after breakfast and lunch, it is recommended to drink water in moderation. A cup of warm water in the morning is very important for our health. After a night's sleep, the body's cell metabolism and skin will be dehydrated. A cup of warm water in the morning can promote gastrointestinal peristalsis and prevent constipation. And a cup of warm water in the morning can also increase satiety, which is also effective for people who are dieting and losing weight. Drink plenty of water in the morning and afternoon. Drinking a small amount of warm water before going to bed and after getting up at night can promote blood circulation, increase blood flow rate and play a certain auxiliary therapeutic role in improving blood viscosity. After getting up at night, you can drink less warm water to promote blood circulation. But for people who have frequent nocturia, try to drink less water before going to bed and after getting up at night. Frequent urination will seriously affect sleep and may induce some diseases. For patients with heart failure, drinking water should be properly controlled, mainly not to be thirsty. Drinking too much water may increase the burden on the heart and induce heart failure.