Why are we sleeping? Detailed answer

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Why are we sleeping? Detailed answer

Big encyclopedia for children and adults

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Why are we sleeping?

There is not a single living being who would not need sleep or complete rest during the day. If you want to know why, try going without sleep for a long time. It turns out that your brain and your body are too tired to work properly. You will become irritable and find it difficult to think clearly or focus on your work. So sleep is simply the time it takes for your body's cells to recuperate after a day's work and accumulate energy reserves for the next period of activity.

One of the indisputable facts about sleep is that we are unconscious during sleep. We are not aware of what is happening around us. But this does not mean a complete cessation of life. The vital organs continue to work during sleep, but most vital functions slow down. Our breathing, for example, becomes slower and deeper. The heart beats slower and blood pressure drops. The arms and legs relax and the muscles that control body position rest.

It would be impossible to relax to such a degree if we were awake. Therefore, sleep does for us what even the most peaceful rest will not give.

During sleep, body temperature drops, which is why people take shelter at night. But even though we are unconscious, many of our reflexes continue to work. For example, if someone tickles your foot, you will move your foot away in your sleep, or you may even brush a fly off your forehead in your sleep! You are doing this completely unconsciously.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

When was aluminum foil invented?

Tobacco King R. R. Reynolds' nephew Richard R. Reynolds obtained 1947 mm thick aluminum foil in 0,0175 and used it as a packaging material. Since then, foil has triumphantly marched around the world. More than 100 tons of aluminum foil are produced and processed daily.

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NASA intern discovers exoplanet 12.01.2020

Wolf Kukier, 17, of Scarsdale, New York, discovered a new exoplanet with two stars 1300 light-years from Earth in the constellation Pictorus on his third day at NASA.

The guy made this discovery last summer. He viewed the Transiting Exoplanet Survey Satellite (Tess) in orbit last year.

So, while studying the intersection of the paths of two stars, Wolf Kukie focused on the TOI 1338 system, where he noticed something in the orbit of these two stars.

NASA later spent several weeks testing his observations, and eventually concluded that Kukyo had discovered a planet 6,9 times the size of Earth. It is the 13th planet of its kind to have ever been discovered.

“About three days into my internship, I saw a signal from a system called TOI 1338. At first I thought it was a stellar eclipse. But it turned out to be a planet. telescope. That's what I noticed first," said the teen.

This is the first multiple orbit planet discovered with the TESS telescope. Scientists refer to them as exoplanets that do not revolve around a single star (like the Earth around the Sun), but around a double one. In turn, a binary star is a system of two gravitationally bound stars revolving around a common center of mass in closed orbits.

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