Water is the source of life, all life can not be separated from the nourishment of water. Although people drink water every day, but did you know that drinking water is also a discipline. Our body is a water storage bag, water accounts for about 60% of our body weight. Water is very important to the human body, it is a precious unique universal solvent, can participate in the movement of life, eliminate harmful toxins, help metabolism, maintain aerobic respiration and so on. 1, to help digestion: the food we eat into the mouth, after chewing by the teeth and saliva wetting, to carry out the digestive process from the esophagus to the gastrointestinal, complete digestion and be absorbed, these links are to water to participate in, to accelerate the dissolution of body fluids on nutrients. 2, excretion of waste: food nutrition after digestion and absorption of the remaining residue waste, through sweating, breathing and excretion of the way out of the body, these different excretion methods need the help of water to achieve. 3, lubricating joints: human joints need lubricating fluid to avoid damaging friction between the bones, and water is the main source of joint lubricating fluid. 4.Balance body temperature: When the ambient temperature is lower than the body temperature, in order to maintain the body temperature to ensure normal physiological activities, the body water will be retained in the body due to reduced evaporation from the narrowed pores; ambient temperature is higher than the body temperature, water will be discharged through the expanded capillary respiratory pores to lower the body temperature. The body ensures survival function through water dissipation. 5, maintenance of cells: water can promote cell metabolism, maintain the normal form of cells; keep the skin moist and elastic. 6, balance the blood: water can improve the circulation of blood, tissue fluid, and help balance the viscosity and acidity of blood. If the body is not enough water will lead to gastrointestinal digestion, blood transport nutrients, body fluid concentration regulation and other malfunctions, over time will also lead to back pain and common deformed knee arthritis, arthritis and other diseases. Drinking enough water not only reduces the chance of these diseases, but also improves symptoms and diseases such as fatigue, weakness, constipation, high fever, poisoning, dehydration, arthritis, diabetes, liver and kidney stones.