Hello, it depends on your physical fitness. Drink cold in summer and hot in winter. In daily life, drink more warm water. The water temperature should not be too cold or too hot. Drinking warm boiled water can not only quench thirst, but also increase blood volume, properly regulate immune function and improve resistance. If you like to drink cold water, it will be a little irritating to the stomach and pancreas, especially to people with weak spleen and stomach. If you drink cold water, it will stimulate the intestines, leading to a stomachache. If you drink warm water, you can avoid this kind of stimulation. In addition, boiling water can also play a certain disinfection and sterilization role, which can reduce the chance of gastrointestinal infection. Drinking more warm water can help defecate, avoid dry stool and relieve constipation patients.