Nutrition experts say that drinking water and intake of calories, "how much you need, how much to supplement", and drinking too much water, electrolyte imbalance (sodium, potassium ions loss), water-soluble vitamins (such as B group and C) easy to lose and other problems.

scientists point out that the human body loses about 1,800 to 2,000 cc of water every day from urine, sweat or skin evaporation, so healthy adults need to supplement about 2,000 cc of water every day. However, 2000cc water is not necessarily obtained by drinking water, and the water in food should be included. In fact, the foods We eat every day contain a lot of water. For Example, most vegetables and fruits are more than 90% water, while eggs and fish are about 75% water. Roughly estimated, We eat a meal, at least from food or soup intake of 300 to 400cc of water. Therefore, deducting the 1000-1200cc water intake from food in three meals, We only need to drink 1000-1200cc water every day, an average of 2 cups in the morning and 2 cups in the afternoon, even if we do the basic skills. However, the water requirement depends on each person's environment (temperature, humidity), exercise, physical health and food intake, and there is no standard value.