50%-60% of human tissues are water. The human body needs enough water to maintain normal physiological functions. Every calorie of food needs one milliliter of water to maintain the metabolic balance in the body. The average person needs to consume 1.5 ~ 2 liters of water every day, which is equivalent to eight cups (about 200 ml per cup).
2, the correct intake of water-
It is wrong for people to drink water when they feel thirsty, which shows that the cells in the body are already dehydrated, so they will feel thirsty. But too much water intake will also increase the burden on the kidneys. People who drink less than 5 glasses of water are prone to constipation and other symptoms, causing problems such as dull skin color, dryness and dry heart.
Therefore, drinking 1.5 liters per day is not enough to complete the task. The food we usually eat, such as vegetables, fruits, drinks, etc. , all contain water. If you eat fruit and soup today and then drink 8 glasses of water, you may consume too much water.
3, scientific hydration-
A. Drink a large glass of water on an empty stomach in the morning and lie on the right side for 15 minutes, which is helpful to regulate liver and gallbladder function and promote normal defecation.
B. it is not advisable to drink too much water after meals. Because drinking too much water will only dilute the digestive juice in the stomach and affect the digestion and absorption of food.
C. it is not advisable to drink too much before going to bed. In order to avoid water stagnation in the whole body tissue, it becomes edema and forms bags under the eyes.
D. it is best to drink warm water. Ice water can stimulate the stomach, hinder digestion and secretion, increase the load of digestive organs, and lead to indigestion.
E. Never drink raw water.
F. milk, fruit and vegetable juice, soup, etc. It should also be recorded in the daily drinking volume to prevent excessive drinking from bringing burden to the kidneys.
G. When sweating heavily in summer, if you exercise, you can appropriately supplement light salt water to replenish lost body fluids.