There is no such thing as which three people can’t drink water in the morning, usually, most people can drink a moderate amount of water in the morning. In general, after a night’s sleep and rest, the body loses more water, so moderate drinking water in the morning will help to replenish water for the body and promote the body’s metabolic cycle, most people can drink water in the morning. It is recommended to drink 200ml of water each time, and the total amount of water in a day is about 1500ml. But for patients with kidney failure, heart failure and other diseases, need to strictly control the amount of water each time you drink, so as not to increase the burden on the body, adversely affect the condition. In addition, it is advisable to drink warm water in the morning, not too hot, which is unfavorable to the esophagus. For patients with the above diseases, they should also drink water under the guidance of physicians.