Drinking schedule 8 glasses of water

The schedule of drinking 8 glasses of water a day is the first glass at 5 or 6 in the morning, the second cup at around 9: 00, the third cup at around 1 1 in the afternoon, the fourth cup at around 1 in the afternoon, the fifth cup at around 3: 00, the sixth cup at around 5: 00, the seventh cup at around 7: 00 and the eighth cup at around 9: 00.

A healthy person should drink at least 8 glasses of water (about 2.5 liters) every day. When the exercise is heavy or the weather is hot, the water consumption will increase accordingly. Getting up in the morning is the key moment for the body to replenish water in the new day. At this time, it is best to drink 300 ml of water.

The amount of urine excreted by human body in one day is about 1500ml, and the water lost from feces, breathing and skin is about 2,500ml. Therefore, the daily water demand of healthy adults is about 2,500ml, of which drinking water accounts for about 50%, water contained in food accounts for about 40%, and water produced by metabolism in the body accounts for 10. Adults living in mild climate and less physical activity should drink at least 1200ml every day. Under the condition of high temperature or strong physical labor, it should be increased appropriately.

Physiological function of water

1, digestion aid: the food eaten in the mouth is digested and absorbed through the chewing of teeth and the wetting of saliva, and through the digestive process from esophagus to gastrointestinal tract. All these links need water to accelerate the dissolution of nutrients by body fluids.

2. Waste excretion: The residual waste after digestion and absorption of food should be excreted through sweating, breathing and excretion. These different ways of excretion need the help of water.

3, lubrication joints: human joints need lubricating fluid to avoid destroying the friction between bones, and water is the main source of joint lubricating fluid.

4. Balance the body temperature: When the ambient temperature is lower than the body temperature, in order to maintain the body temperature and ensure normal physiological activities, the water in the body will remain in the body due to the reduced evaporation of the narrowed pores; When the ambient temperature is higher than the body temperature, water will be discharged from the body through the expanded capillary breathing hole, which will lower the body temperature. The body ensures its survival function through the dispersion of water.