The demand for water is mainly affected by age, environmental temperature, physical activity and other factors. The amount of urine excreted by the human body in one day is about 1500ml, and the total water consumption is about 2,500ml with the addition of water lost from feces, breathing and skin.
Therefore, the daily water demand of healthy adults is about 2500ml, 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 should drink at least 1200ml every day.
Calculation of drinking water quantity:
Generally speaking, the water lost from urine, sweat or skin evaporation every day is 40ml/Kg. For example, if you are 50Kg, you need 2000ml of water a day. If you are 70Kg, you need 2800ml of water. So we can take this quantity calculated by weight as a basic quantity. On this basis, simple "addition and subtraction" can be done.
Extended data:
Benefits of adequate drinking water:
1, more energy
When the body is short of water, the permeability of cell membrane becomes worse, which hinders the entry of nutrients and hormones and the outflow of waste.
2. Memory improvement
Both synapses and neurons in the brain need fluid to start. People who are short of water will lose their memory and make people depressed.
Step 3 focus
Mild water shortage will interfere with the process of information processing in the brain and reduce the ability of concentration.
4. The body is stronger and faster.
Even if the water content in the body drops by 2%, it will lead to a significant decline in physical strength and motivation and an increase in fatigue. Proper intake of water will make muscles more relaxed, thus increasing energy supply and improving sports performance.
Reference: Baidu Encyclopedia-Drinking Water