Water is a component of body cells, which not only fills the whole tissue cells of the body, but also is the main liquid to maintain the normal concentration of body fluids in the body. At the same time, every process of food digestion, absorption, nutrient transportation and utilization needs the participation of water; After digestion, absorption and metabolism, the remaining food residues and metabolic wastes also need the help of water to be excreted smoothly. In addition, water has other functions, such as lubricating joints, avoiding friction between bones, providing mucus secretion matrix, lubricating gastrointestinal tract, respiratory system and urinary tract, and balancing body temperature. This shows the importance of water to human health. If the body loses 15% to 20% of its weight, it will stop its physiological function and even die. In summer, many people are used to using sports drinks as a source of water supplement. In fact, although the body will excrete a lot of electrolytes when sweating during exercise, the yin organs will automatically adjust to reduce the electrolyte discharge in urine to maintain the stability of the body. Although sports drinks can replenish electrolytes lost in sweat, they contain sugar, which will prevent liquid from flowing from the stomach to the small intestine. Therefore, in terms of water supplement, sports drinks are not conducive to the absorption of water, unless athletes engaged in intense sports, such as marathon runners or people with severe diarrhea, the average person does not need to supplement electrolytes. Especially for people with poor renal function, high blood pressure and heart disease, due to excessive sodium in sports drinks, edema may be caused or excessive potassium cannot be discharged, thus raising blood pressure. In short, boiled water tastes healthy and has no heat burden. Drinking boiled water is the best. Drink more water, drink more water, but how much water is the standard. In fact, there are no strict standards, but there are some statements for reference. For example, if you see that your urine is as clear as boiled water, and the amount is large and smooth, it means that you have drunk enough. If the color is dark, you should drink more water. However, I want to remind you that sometimes urine is clear as water, not because it is not enough water, but because it may be renal failure, and it is impossible to excrete waste from the body. So it's best to consult a doctor to find out if your kidneys are healthy. At the same time, if you exercise, you should also increase the amount of drinking water. You can refer to the following calculation method: water consumption = "urine volume" plus "non-sensory water loss" 1. Urination volume: the average person cc per minute, so the normal urine volume for 24 hours a day is 1400 ㏄. Second, the water loss without feeling is calculated as per kilogram 10 cc. For example, for a person of 70 kg, the water loss without feeling is 700 cc. Because of this, a 70 kg normal person should drink at least 2300 c c a day. As for patients with stones, gout, heart failure, renal failure, liver cirrhosis, ascites or uremia, the amount of drinking water should be adjusted according to the doctor's advice. Drinking water is especially important for the elderly. Because the water content in the elderly is obviously reduced, their perception is relatively dull and they seldom feel thirsty, so they often can't properly reflect the water shortage in their bodies. When the water content in the body is insufficient and the water intake is too small, the cerebral blood flow is reduced, which aggravates the symptoms of hypertension, the cerebral oxygen and blood sugar are low, and the cerebrospinal fluid is too sticky, which affects the nerve conduction speed and the sharpness and sensitivity of brain activity. People tend to be depressed, which is related to Alzheimer's disease. So pay attention to water intake. Water contributes to the digestion and absorption of food and the transport of nutrients in the body. It can dilute wastes in the body, such as uric acid, which is beneficial to kidney excretion and can prevent constipation. In order to avoid going to the toilet at night and affecting sleep, you can drink more water during the day.