Why do people eat, drink and sleep every day?

1, people will consume energy when they are alive, and exercise will also aggravate energy consumption. Food and water can be converted into energy in the human body just as oil can be converted into mechanical energy, so we must eat food, but people eat a lot of things, some of which are eaten to satisfy their appetite, which is beyond their needs, and some of which cannot be absorbed and converted into energy by the human body. These will become residues and be excreted to avoid poisoning, because all food is toxic.

2. Drinking water: All living things on the earth cannot live without water, and the water content of human tissues reaches over 85%. Every day, the wind, the sun and the sun will make the body lose water, so it needs to be replenished and absorbed by the tissues in the body.

3. Sleep problem: There are many reasons why people have to sleep, such as the laws of nature, the rotation and revolution of the earth. If the earth rotates once, not one day, but one year, people may only sleep once a year. If the earth rotates once, not for one year, but for many years, people may live a long life, which is also related to people's thinking, brain tissue activities, sports and mood fluctuations. These data are too active.

Therefore, why people eat, drink, disperse, excrete and sleep every day is a physiological reaction and a part of brain nerve activity.