Nutrition experts point out that drinking water is like consuming calories, "replenish as much as you need", and drinking too much water can cause electrolyte imbalance (large loss of sodium and potassium ions) and easy loss of water-soluble vitamins (such as B complex and C).

Scientific research shows that the human body loses about 1800 to 2000cc of water every day through urine, sweat or skin evaporation, so it is said that healthy adults need to replenish about 2000cc of water every day. But 2000cc of water is not necessarily obtained by drinking water, and the water in food should be counted together. In fact, the various foods we eat every day contain a lot of water. For example, most vegetables and fruits are more than 90% water, and eggs and fish are also about 75% water. Roughly estimated, we can get at least 300 to 400cc of water from food or soup when we eat a meal. Therefore, deducting the 1000 to 1200cc of water taken from food in three meals, we only need to drink 1000 to 1200cc of boiled water every day, an average of 2 cups in the morning and 2 cups in the afternoon, and we will be considered to have done the basic work. However, the amount of water required depends on each person's environment (temperature, humidity), amount of exercise, physical health and food intake, and there is no standard value.