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Anonymous users2024-02-15Under normal circumstances, if you can't sleep too little, although it can't be said that more is better, it can be said that sleeping less is definitely harmful. There is a legend that a person has a certain amount of waking time, and when he reaches this limit, he needs to sleep for a long time - death. When a person is born, he wakes up from chaotic sleep, and then he wakes up for a while, sleeps for a while, and repeats the cycle, and finally falls asleep and no longer wakes up and returns to the chaotic state.
Although it is impossible to verify the truth of this theory, there are many facts to explain this phenomenon. For example, untimely death is a good example. It can't be said that those human elites don't understand the truth of scientific health preservation, and they don't know that the combination of work and rest has Zhang Youchi's way of civil and martial arts, right?
Why did they all die in the prime of life? According to Guo Degang, Hou Yuewen, a comic star, often stays up all night at work, and believes that night is the best working time, and it is simply a "waste of time" to sleep. The amount of sleep a person spends varies from person to person, but in general, it is normal to sleep for hours, and do not deliberately reduce it.
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Anonymous users2024-02-14Adults sleep 7-8 hours a day can already replenish enough energy, sleeping more is not good for health, because you usually sleep about 9 hours, forming your own biological clock, a little sleep will of course cause the body's reaction, after a period of time to adjust over. It is worth mentioning that sleeping too much will lead to a relatively tired mental state of the day, and proper control of sleep time is conducive to improving the work efficiency of the day.
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Anonymous users2024-02-13Just get used to it. Don't sleep too long.
But it depends on what age you are.........
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Anonymous users2024-02-12Get up when you're not sleepy!
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Anonymous users2024-02-11Sleeping 8 hours is the normal sleep time, but the sleep time varies from person to person, usually adults over 18 years old, 6-8 hours of sleep is the normal sleep duration. If you wake up after 8 hours without feeling tired, you can increase the sleep time appropriately, but not too long. The average sleep time of each adult is hours, each person's sleep cycle includes two stages of deep sleep and light sleep, it usually takes about 30 minutes to enter the deep sleep stage after falling asleep, deep sleep and light sleep are alternated in the daily sleep process, usually need 4 cycles to ensure that the brain gets a better rest.
Each cycle alternates between deep sleep and light sleep, so 6-8 hours of sleep per day is a normal sleep duration for each adult. If you can ensure 6-8 hours of sleep every day, you can ensure that the brain is fully rested during sleep, improve daily metabolism, and prepare enough physical and mental power for the next day's work and life. Ensuring that the body has a certain amount of sleep can maintain a stable physiological cycle and normal operation, so as to ensure that people's physiological functions have a good internal environment and help have a healthy body.
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Anonymous users2024-02-10Let me cite some experiments to illustrate.
A study of nearly one million people over the age of 30 found that people who regularly slept less than four hours a day were three times more likely to die within six years than those who slept seven or eight hours a day.
2. A 1983 study conducted by the Naval College of Health Sciences in San Diego found that people who slept 5 to 7 hours a day performed worse in all performance evaluation measures than those who slept more than 7 hours a day. Overall, people who don't sleep well get fewer promotions in their careers, lower pay scales, fewer referrals to work longer, have higher turnover rates, and are more likely to be hospitalized in the course of work.
One study found that women who slept an average of five hours a night were 39 percent more likely to develop heart disease than those who slept eight hours a night.
Another study found that men who slept only four hours on two consecutive nights had changes in their hormone levels, especially a decrease in leptin and an increase in ghrelin, which made them feel hungry and want to eat carbohydrate-rich foods such as cakes, candy, ice cream and pizza. Researchers believe that frequent sleep deprivation is associated with obesity.
Finally, I would like to say that it is true that a small number of people only need 4-5 hours a day, but most people feel this way, which is very embarrassing. And there's no way to train our body to reduce its own sleep needs.
I think you should shorten your sleep time because you want to have more time to work or study, but Einstein should sleep at least 10 hours a day, which means that your work achievements or academic performance may not have anything to do with the length of sleep, but after enough sleep, your attention and willpower will be better, and you can better complete the tasks you want to accomplish.
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Anonymous users2024-02-09Scientists have studied the human nervous system and the amount of activity every day, so you must sleep enough for 8 hours, so that you can quickly recover your mental state and be able to face the next day's life.
Although you have slept enough at night, seven or eight hours, but you are still sleepy during the day, there are two possibilities, the first is because you have stayed up late for a long time and are too tired, so you have slept for seven or eight hours, but the energy has not been fully replenished, so it will cause this phenomenon of sleepiness, and there is also a possibility, that is because you lack exercise, so although you have slept enough, seven or eight hours, but the spirit is still sluggish, therefore, to change this state, in addition to exercising, that is, to supplement sleep.
If you believe that your body clock can be set on its own, you're thinking too much. The biological clock, also known as day and night, is present in everyone's body and tells us to start working at sunrise and rest at sunset. Its existence has also been scientifically proven. >>>More
It's usually 8 hours, as long as you don't feel tired during the day.
Whether six hours of sleep a day is enough or not depends on the individual. In the case of teenagers and children, six hours of sleep a day is usually not enough and may affect the growth and development of the body; If you are an adult or older, you may be able to sleep for six hours, but you should not be chronically sleep-deprived and need to make up for sleep in an appropriate way. In principle, it is necessary to wake up full of energy; If you feel good after six hours of sleep, it should be said that it is enough.
Generally speaking, 8 hours is the normal amount of sleep required by the human body, but it depends on individual circumstances: children and the elderly sleep longer, and young people can sleep less often. It's young after all.