When was sleep invented, and when was it invented when humans lay down to sleep

Sleep is a human instinct, a phenomenon that has been the case since ancient times, and there is no need to invent it!

Sleep is a person's own skill, people need to rest when they are tired, and thirst needs the same as water, which is in people's genes.

This is the natural behavior of all animals.

Sleep is not an invention, it is a way of rest for animals and humans, and it is an indispensable part of existence.

Sleep is not invented, it is the instinct of people and animals, it is the same instinct as eating and drinking, and it does not need to be invented by anyone.

Sleep is not an invention, it is a physiological need of man.

Human physiological needs and responses.

Sleeping horses are born with a sense of sleep, because when they are sleepy, they have to sleep, and this is not what anyone invented.

Naturally formed, they are born to sleep lying down.

Invented in 1653 by Kuchazisky.

Anyway, lying down to sleep, before the invention of human beings were sleeping standing up. Or how to sleep.

Sleeping at night is what the human body needs, not that the inventor is in a state of mental tension when he works during the day, and he also has to rest at night, and all the work and rest are combined, so as to improve the efficiency to the maximum.

Many people regard the refrigerator as a "food sterilizer" at home, thinking that the food stored in the refrigerator is hygienic. In fact, because the refrigerator is stored for a long time and not cleaned frequently, many bacteria can grow. The food in the fridge looks fresh on the outside, but it has actually gone bad.

For cooked meat, food should not be stored in the refrigerator for more than 4 days.

The common refrigeration temperature for food in the refrigerator is 4 to 8 °C, where the growth rate of most bacteria slows down. However, some bacteria are cold-loving, such as Yersinia and Listeria can grow and multiply rapidly at this temperature, and if you eat food infected with these bacteria, it will cause intestinal diseases.

In the freezer of the refrigerator, the temperature is generally about minus 18, and at this temperature, bacteria will generally be inhibited or killed, so the food stored in it has a better preservation effect. However, freezing does not mean that it can completely kill bacteria, and there are still some bacteria with strong frost resistance that will survive. So, from another point of view, if the refrigerator is not disinfected frequently, it will become a "breeding ground" for some bacteria.

Fish and shellfish should be stored in the refrigerator for no more than a day, soft fruits for a day or two, and hard fruits for 3 to 7 days. Cut meat and poultry should not last for more than two days, eggs should be stored for a week, and leafy greens should not be stored for more than four days.

That's all there is to say about the common sense of life, this kind of vanity is also a hope that can be encountered in life. It can help you. Whether it's day or night, I wish you a good mood and a happy life.