Why do people sleep 10, why do people 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 is the result of inhibition of nerve cells in the cerebral cortex as they 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 people continue to work.

Well, in order to survive in a world you don't know. You don't sleep, and another you may not have time to move because of you. Remember your dreams?

Some may be real and another is your activity. Sleep well.

People can't live without sleeping.

Your brain needs to rest, and your nerves need to relax.

Restorationtheory and conservationtheory are two theories that explain the necessity of sleep. According to the theory of recovery, sleep has the function of restoring energy and fatigue. The maintenance theory is a supplement to the restoration theory.

According to the theory of maintenance, the main reason why individuals need sleep is to conserve energy and vitality, so as not to overfatigue and endanger health. In other words, sleep has an automatic regulatory effect on the maintenance of normal physical and mental functioning.

In order to make tomorrow more alive.

Replenish your stamina and recharge your body.

Rest well and work better for tomorrow.

I feel comfortable to replenish my energy, sleep and be able to leave everything behind.

To wake up, so sleep!

People need to rest People are not machines.

If people don't sleep, what a mess the earth will be!

How do you daydream if you don't sleep?

This is the law of nature, of course, people need to rest to replenish energy.

The physiological function of the person is determined.

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?

Envy Yebi. > 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 stress in the body increases, and the longer we stay awake, the greater this stress becomes. 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.

Zebrafish have similar characteristics of neural activity during sleep and are the subjects of sleep study. Through zebrafish experiments, researchers determined that the accumulation of DNA damage is a driving factor that causes sleep states. 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.

Overexpression and knockdown (down-regulation) of PARP1 through genetic and pharmacological manipulation 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 is too profound... But to put it simply, it is actually the opposite of advocating family planning.

Nope! People don't have to sleep! Do you have to sleep? I suggest you check it out, or you won't die!

Sleep, generally referring to human sleep, is an indispensable physiological phenomenon for human beings. In a person's life, sleep accounts for nearly 1 3 of the time, and its worst is closely related to human health, which shows how important sleep is to everyone.

People need to replenish their energy by sleeping

Why do Yu Haoren slip and sleep in the tent?

Quite simply, after a day's work, a substance is produced in the brain, and if there is more, the brain will be injured, and sleep will remove this substance.

Sleep is rest, and only when you rest can you have energy.

Because sleep is a physiological need of people. In all things in nature, motion and stillness are a unified whole, and it is a distinctive feature to reach a new equilibrium in constant change. Human beings, as the spirit of all things, embody this law of nature in many aspects of themselves.

For example, the accumulation and consumption of life substances, the acquisition and release of energy and other metabolic phenomena run through a person's life, and it is precisely because of these phenomena that a person can complete the entire life process from birth to death.

Human beings need energy for survival, including various forms of energy, such as mechanical energy for activity, heat energy for maintaining normal body temperature, and electrical energy for nerve conduction. These energies are obtained through metabolism to digest and decompose food into components that can be absorbed and utilized by the human body and stored in the human body, which are the energy that the human body completes its life activities. Energy storage and energy consumption are two simultaneous processes in the human body's vital activities, but the quantity of the two is sometimes large and sometimes small.

During the day, when the person is active, the expenditure of energy is the main one; When people are asleep at night, various physiological activities of the human body are weakened, and energy consumption is greatly reduced. Therefore, sleep is a physiological need of human beings.

Sleep should generally be maintained for 7 to 8 hours, but it is not necessary and should vary from person to person. Those who fall asleep quickly and sleep deeply, and generally have no dreams or few dreams, can fully recover their energy after 6 hours of sleep; People who fall asleep slowly and have many light sleepy eyes, often dream and nightmares, even if they sleep for 10 hours, it is still difficult to be refreshed, and they should go through various ** to get effective sleep, but prolonging sleep time is harmful to the body. Since everyone has a different biological rhythm, the arrangement of sleep in the morning and evening should be different from person to person!

In fact, different circadian rhythms cause two conditions of sleep, namely "night owls" and "larks". Adapting to this circadian rhythm is good for work efficiency and quality of life, and vice versa, it is bad for health.

According to the medical theory of the motherland, it is advisable to go to bed late and get up early in spring and summer, and you need to sleep 5 to 7 hours a day; In autumn, it is advisable to go to bed early and get up early, and you need to sleep 7 to 8 hours a day; In winter, it is advisable to go to bed early and wake up late, and you need to sleep 8 to 9 hours a day. Conform to the laws of natural growth and collection.

Sunny, hot days with short sleep durations; Bad weather, such as rainy days, cooler winters, and long sleep hours. With the increase of altitude in the area, the sleep time decreased slightly; With increasing latitude, sleep duration is slightly longer.

The most convincing argument is Professor Hartman, director of the sleep lab at the Boston Mental Health Center in the United States. According to him, sleep has two functions: the first is to eliminate physical fatigue, and the second is to eliminate mental fatigue.

In his opinion, the elimination of physical fatigue is unquestionable, and the function of eliminating mental fatigue has been discovered in recent years in the study of short sleepers. Hartman once compared short sleepers who slept only four hours a night to long sleepers who slept eight to nine hours a night, and found that there was no physiological difference between short sleepers and long sleepers. They are the same height, weight, and even intelligence.

However, their respective psychological states are very different: long sleepers are always worried, while short sleepers are extremely optimistic. Hartmann believes that the elimination of physical fatigue occurs mainly in the so-called slow-wave sleep at the beginning of sleep, that is, during the period from drowsiness, light sleep to deep sleep, and in the slow-wave sleep after deep sleep.

Short sleepers and long sleepers experienced diffuse sleep in almost equal proportions. The recovery of mental fatigue mainly occurs during REM sleep after deep sleep. Because long sleepers have more worries than short sleepers, they need to recover from mental fatigue for longer periods of time than short sleepers; The opposite is true for short sleepers.

Hartman believes that this is the reason why Pauline, who sleeps only two hours a day, does not have REM sleep in his sleep.

When people are sleepy, they have to sleep and obey the laws of nature.