March 22nd is World Water Day, which aims to arouse the public's awareness of water conservation and strengthen the protection of water resources. Water is the source of life and an indispensable substance for human survival and development. There are countless famous sayings, proverbs and sayings related to "water".

"People can go without food for three days, but they can't go without water for one day" literally means that people can go without food for three days. Research shows that the average person can live for two or three weeks or even longer without food, but in the case of serious water shortage, life can only last for two or three days. This sentence vividly illustrates the dependence of human survival on talking about water.

Modern medical research shows that water accounts for about 90% of 70% of the total weight of human body, 865,438+0% of brain, 75% of muscle and 28% of the hardest bone. 98% of human tears are water, and urine and sweat also contain a lot of water. Once the body is short of water, it will dry mouth and wrinkle skin, and in severe cases, it will be unconscious and hallucinate. People will be in danger if they lose 15% water.

Every living thing is inseparable from the foundation of promoting cell metabolism. Normal metabolism, oxygen transport and cell replication of human body need to be carried out in an environment with water. Water is the solvent and transportation tool of various nutrients and wastes in human body, and it is an important medium for regulating body temperature and maintaining electrolyte balance.

The average adult in Xinchenchuan Lake consumes about 2506m of water a day, and each person needs to consume at least 2500ml of water a day. Normal eating depends on food to get 1000ml moisture. In addition, we drink 1500ml of water every day. At high temperature, manual workers will need more water; Drink plenty of water when you are sick and have a fever, because every time your body temperature rises 1 degree, your metabolism will accelerate by about 7%.