Why does a person need to sleep???

Almost everyone has to get a good night's sleep after a busy day. Of course, there are people who live their whole lives without sleeping, but that is very rare. Sleeping is a physiological response, part of the brain's neural activity, and the result of inhibition after the nerve cells in the cerebral cortex continue to be excited.

When the inhibitory effect is dominant in the cerebral cortex, the person sleeps. In life, people have work, rest, nervous activity, excitement, and inhibition. Inhibition is done to protect the nerve cell so that it can be re-excited and allow people to continue working.

Summary. If a person is very able to sleep, I think first of all, it means that the body is very healthy, and the other is that he is very optimistic and cheerful about life, does not get entangled in things, faces life optimistically and positively, and is open to everything and work. The trivial things of life are easy to deal with, in general, there is no accumulated emotion.

If a person is very able to sleep, I think first of all, it means that the body is very healthy, and the sedan base is very optimistic and cheerful about life, not entangled in things, optimistic and positive in life, open to everything, and work. The trivial things of life are easy to deal with, and in general, there is no emotion that has accumulated in the mind.

Hello, brother Min Oak because I saw that you rated my last time I didn't take Kai, I am very concerned about your experience. If you are satisfied with my service, I hope you can give a thumbs up! If there is a problem, I am always waiting for you.

I wish you a happy life and a happy life!

To put it bluntly, this is the sadness of a single dog. When a person is single, there is only one person when he sleeps, which is called rest, and if it is a couple or a couple, because they have two people, it is called sleep, because two people have company, they can chat, they can talk quietly.

A person is called rest, because it is a person alone, then he is resting to recuperate, two people sleep together, because two couples are together, they can fall in love, they can also do some things as they like, and when they sleep, they can also use each other, that is called sleep, and if a single dog, a person it is equivalent to self-cultivation and rest, called rest.

One person is called rest, and two people are called sleeping

One person is called rest, and two people are called sleep emojis, a popular emoji on Douyin recently, everyone can use it. You can add it to your phone or social software and collect it. This set of emojis has a very wide range of uses, and can be used when the object is routine.

There are two centers of gravity in this word game, in short, there are two differences, one is the difference in quantity, one person, yes, two people, and the second is the difference in quality, rest and sleep.

Hello dear! Whether it is a young man in his twenties or thirties, or a middle-aged person or even an elderly man in his seventies and eighties, this situation is often accompanied by the possibility of two diseases, one is high blood lipids, thick blood lipids cause cerebral blood supply, insufficient oxygen supply, and it is easy to sleep. Either the corresponding Soupai cervical disease compresses the vertebral arteries, resulting in insufficient blood supply and oxygen supply to brain cells, so it is super able to sleep.

Humans spend a third of their lives sleeping, including invertebrates such as flies, worms, and even jellyfish. Throughout evolution, sleep has been universal and essential for all organisms with a nervous system. However, have you ever wondered why we sleep?

In fact, scientists have been searching for answers for years. According to a new study published in the journal Molecular Cell on November 18, researchers at Bar-Ilan University in Israel have found that the PARP1 protein in the brain acts as an "antenna" that sends time signals to the brain to sleep and repair DNA damage, a discovery that is one step closer to solving this mystery.

When we are awake, the homeostatic sleep pressure in the body increases, and the longer we stay awake, the more stress this stress increases. During the few hours of waking hours, factors such as ultraviolet light, neuronal activity, radiation, oxidative stress, etc., can cause sustained DNA damage in neurons. However, excessive DNA damage in the brain can be dangerous, and sleep can "summon" the DNA repair system.

The characteristics of neural activity during sleep in zebrafish are similar to those of humans, and they are the subjects of sleep study. Through zebrafish experiments, the researchers determined that the accumulation of DNA damage was the driving factor for sleep state. When the accumulation of DNA damage reaches the maximum threshold, the homeostatic sleep stress increases to the point where the urge to sleep triggers it, and the fish goes to sleep.

Subsequent sleep promotes DNA repair, which reduces DNA damage.

So, what is the mechanism in the brain that tells us: it's time to sleep? The study found that the PARP1 protein is part of the DNA damage repair system and is one of the first proteins to respond quickly.

It flags the location of DNA damage in the cell and "recruits" all relevant systems to remove the DNA damage.

Through genetic and pharmacological manipulation, overexpression and knockdown (down-regulation) of PARP1 experiments have shown that increasing PARP1 not only promotes sleep, but also increases sleep-dependent repair. Conversely, inhibition of PARP1 blocks the signal for DNA damage repair. As a result, the fish are not fully aware that they are tired and therefore do not go into sleep mode, causing DNA damage to not be repaired in time.

The same results were validated in mice.

This new finding describes how to explain the "event chain of crypto-burning Zheng" of sleep at the single-cell level. This mechanism explains the link between sleep disorders, aging, and neurodegenerative diseases such as Parkinson's disease and Alzheimer's disease. The researchers believe that future research will be extended to more animals, from lower invertebrates to humans.

The reason why <> people need to sleep is that they can restore their energy and physical strength through sleep to maintain a good state of awakening, so that they can be energetic to engage in labor or other activities. Everyone has to get a good night's sleep after a busy day. Sleeping is a physiological response, part of the brain's neural activity, and the result of the inhibition of the finch after the nerve cells in the cerebral cortex continue to be excited.

When the inhibitory effect is dominant in the cerebral cortex, the person sleeps.

Sleep:

Sleep is also a metabolic process of memory cells: aging cells input each memory letter into the new cell in the same arrangement as it is used for early rest, ready for storage. These include sports preparations, language zones, balance keys, and some memories and memories of everyday life.

They are all material, so they also exist in a material way. If a person does not get enough sleep for a long time, causing memory cells to be unable to live a healthy life, they are prone to certain health problems and even diseases, such as aphasia, spasticity, convulsions, or shock and fainting caused by forced sleep.