How many hours of sleep is best for an adult?

What is the healthiest way to get eight hours of sleep a day? Wrong! How many hours of sleep should I get in a day?

A lot of people will say right away: 8 hours. Oh, wrong!

West Lake Nutrition] tells you that according to the latest scientific research, the healthiest sleep time is 7 hours, and sleeping too little, or sleeping too much, will increase the risk of death! (Yes, you read that right!) It's not good to sleep too much!

Scientists have concluded a U-shaped correlation between sleep duration and the probability of death, with sleeping too little or too long significantly increasing the risk of death.

It is difficult to believe that prolonged sleep increases the risk of death, but according to a scientific report published this year (2014) in the American Journal of Epidemiology, researchers followed more than 70,000 volunteers for up to 15 years, and the results confirmed that there was a significant positive correlation between excessive sleep and the risk of death. According to the report, 7 hours of sleep per day is the healthiest, and less than 6 hours or more is associated with a significant increase in the risk of death. The reason for this may be that people who sleep too much usually lack daily exercise, and are prone to depression, that is, both physically and mentally tend to be in a relatively low state, and some people die and there are certain sleep apnea factors.

About eight hours is fine.

Under normal circumstances, adults should maintain about 8 hours of sleep, and a 20-minute lunch break at noon is sufficient.

Sleep is not simply rest, but a process of adjustment, such as strengthening memory, organizing information, and restoring immune function, because the immune function is consumed during the day and can only be recovered when resting at night. The normal sleep time is 8 hours for adults, more for children, more than 10 hours, and slightly less for the elderly due to the effects of aging, about 6 hours. The normal guarantee of sleep has a good effect on the comprehensive function of all aspects of the body, and the growth of immune function, the organization of information, and the strengthening of memory will play a positive role in promoting.

So sleep is an important issue that should be taken seriously.

If difficulty falling asleep may be related to excessive tension, anxiety, stress, unquiet indoor environment, excessive heat, hunger or overeating, etc., or it may be related to neurasthenia, you can improve the symptoms of insomnia through diet, exercise and medication, fall asleep as soon as possible, or go to the hospital for treatment.

Basically eight hours.

1. Newborns: Newborn children sleep about 20 hours a day, and babies sleep about 14 to 15 hours a day;

2. Teenagers and young adults: primary school students are teenagers, about eight hours to 12 hours, middle school students are about nine hours a day, college students and adults are basically eight hours a day;

3. Elderly: 60 years old and over 60 years old sleep about nine hours a day, if the elderly sleep less at night, you can use the noon time to make up.

Adults sleep 8 hours a day, and children aged 6-13 years sleep 8-10 hours appropriately. As we age, we get less sleepy, and many older people get enough sleep for 6 hours. Sleep time varies from person to person, so it's better to stay energized during the day.

In addition, the daily sleep time of adults varies greatly due to work and lifestyle habits, which fluctuates around 5-8 hours. While most people may get 7-8 hours of sleep, some people need 8-9 hours or more of sleep to feel sufficient, while others get comparatively less sleep and 4-5 hours of sleep feel sufficient. At this time, it should be judged according to the situation of waking up the next day, if you feel full of energy after waking up, no longer sleepy, and can concentrate on your work and life during the day, it proves that your brain and body have been rested enough at night, and the sleep time of the previous night can meet your needs.

If you wake up with headaches, sore eyes, and low energy, it means that you haven't rested well. If you feel dizzy after thinking about it, although you are not sleepy but you are not motivated, it means that you have slept too much, and you can get up early appropriately.

Adults sleep for 7-8 hours, and complete a sleep cycle every 2 hours or so during each night's sleep, and if you sleep for 8 hours, you need to cycle four sleep cycles. Each sleep cycle begins with a hazy fall asleep, then deepens until you fall asleep, and then transitions to non-REM dreaming sleep.

The time to fall asleep is between 9 and 11 p.m., when the body's energy decreases, the reaction is slow, and the thinking slows down, which is conducive to people turning to slow-wave sleep.

The best time to sleep is between 11 p.m. and 6 a.m., and 11 p.m. to 3 a.m. is the time to sleep**. At this time, the metabolism of the liver is most vigorous. If you miss this sleep** time for a long time, sleep disorders will occur, leading to physical dysfunction.

Adults should ensure 8 hours of sleep every day, only 8 hours of adequate sleep time can provide adults with energy, energy and energy for the day.

The healthy sleep time for adults is generally 7 to 8 hours, and after waking up, it can relieve sleepiness, keep the mind clear and energetic, and the sleep time is appropriate.

If adults have sleep disorders, it is easy to lead to endocrine disorders, accelerate the failure of internal organs, and reduce immunity, thereby inducing a variety of diseases. Have a good night's sleep, and the criteria for a good sleep are deep sleep, less awakening, and feeling good after waking up.

The positive effects of middle-aged people on the body of maintaining 8 hours of sleep a day are as follows:

1. Learn to combine work and rest, and work and play at the same time. Ensuring 8 hours of sleep is beneficial for energy recovery, energy accumulation, and fatigue relieving.

2. Ensure enough sleep to strengthen the memory of the brain, so that the brain cell information can be sorted and summarized, and the brain function can be played greater.

3. Enough sleep to delay aging and play a role in mood adjustment.

Middle-aged people sleep for 8 hours, with a clear mind, full of energy, quick thinking, and high work efficiency.

Adults should get 6-8 hours of sleep a day. Sleep time varies from person to person, and everyone is different, because in addition to the time of sleep, the quality of sleep is also very important. Adults should get 6 to 8 hours of sleep a day so that they can have better energy and cope better with the next day's work.

For 14 to 17-year-olds, sleep between 8 and 10 hours a day, and they need enough sleep to help their physical development. But it is better not to sleep for more than eleven hours, which is not good for health.

For adults between the ages of 18 and 64, it is best to sleep between seven and nine hours a day, and it is okay to sleep only six hours a day, or ten hours of sleep, depending on the individual.

It is advisable to sleep 6-8 hours a day. "People over the age of 60 need 5 to 6 hours of sleep a day; Teenagers or infants need to sleep for more than 10 hours a day; Adults sleep no less than 6 hours a day. "It is medically believed that if an adult's daily sleep time is less than 6 hours too short, and more than 10 hours is too long, it will have a certain impact on physical function.

Seniors over 60 years old.

Sleep hours every day, the elderly should go to bed before 12 o'clock every night, and sleep for 7 hours, or even hours, at night. According to data released by the Alzheimer's Association, brain aging can be delayed for 2 years in the elderly who limit their sleep to less than 7 hours a night. Long-term sleep of more than 7 hours or lack of sleep can lead to poor concentration and even Alzheimer's disease, increasing the risk of early death.

30 60-year-old adults.

Sleep about 7 hours a day, adult men need about hours of sleep, women need about hours, and should ensure a "good night's sleep" from 10 p.m. to 5 a.m. Because people tend to achieve a deep sleep state at this time, it helps to relieve fatigue.

For adult men, hours of sleep are needed, and women need about hours, and "quality sleep" from 10 p.m. to 5 a.m. should be guaranteed. Because people tend to achieve a deep sleep state at this time, it helps to relieve fatigue.

Adults should sleep about 7 to 8 hours a day.

The reason why you need to sleep for 7 to 8 hours is that the physiological system in the body is running regularly, and some physiological functions only play a role in sleep, such as vagus nerve excitation, growth hormone release, etc. 7 to 8 hours of sleep is required to ensure that these physiological functions function properly. However, sleep time does not equal sleep quality, which means that it is not necessary to relieve fatigue after waking up after sleeping for 8 hours.

It is difficult to make up for poor sleep quality with sleep time, so if you want your body to get enough rest, you should pay attention to sleep quality.

However, it should be noted that sleep with a disturbed biological clock cannot be based on sleep time. The reversal of day and night makes various physiological functions of the body, especially endocrine disorders, which can cause various physical discomforts. Therefore, it is not guaranteed that you can stay healthy by sleeping for 8 hours.

When it comes to sleep, everyone immediately thinks of the 8-hour time law, a good sleep can enhance people's body immunity and prevent various diseases. When we go to school, the teacher will persuade us to sleep less than 8 hours a day, and the spirit of class will be insufficient the next day, and many parents will also say the same, which is like a conventional formula, which is deeply imprinted in their minds by many people. But in fact, the amount of sleep depends on each person's situation.

The 8-hour sleep rule isn't for everyone.

If you can ensure that your sleep time is 8 hours of high-quality sleep every day, it is indeed of great help to people's health, but under the influence of the current environment, if you want to ensure that you can have a high-quality sleep, I am afraid it is not very easy to achieve. Therefore, people's sleep time has changed a lot, and the previous 8-hour rule has to be changed according to the changes of the times.

Because teenagers are relatively young, their bodies are in a stage of continuous development, and people at this stage need adequate nutrition and good sleep, which is more conducive to their healthy development. But now is the era of highly developed electronic information, there are a lot of teenagers' hobbies, to this aspect of development, more and more children like to play mobile phones, play games, watch TV on the Internet, which also leads to many children now have problems with physical development. If teenagers stay up late for a long time, it is likely to affect their bone development and have a great impact on their height, so they must ensure that they sleep for 8 hours a day so as not to affect their body.

The older generation basically has the habit of getting up early and going to bed early, and they don't need to sleep for 8 hours a day. And after people are older, it is easy to wake up early, and some elderly people go to bed at ten o'clock at night, and they will wake up naturally in the morning, which is a physiological reaction to aging. There are also elderly people who suffer from diseases, which will also cause their sleep time to not be long, so for the elderly, 8 hours is not necessary, but don't stay up late, staying up late is very harmful to people's bodies.

Normal adults should not sleep less than seven hours a day, adolescents are in the period of physical and intellectual development, sleep time can be appropriately extended. If you don't get enough sleep, it can lead to a decrease in work and study efficiency during the day, and lack of energy, which affects work and study.

During the day, you can take a lunch break for half an hour to an hour at noon, so that you can continue to maintain energy in the afternoon. Good sleep is a sign of health, and if there is a long-term lack of sleep, it can weaken the body's immunity and easily induce the occurrence of various diseases.

As an adult, I think I should get at least eight hours of sleep a day. Sleeping too little, being easily anxious, and having a bad mental state. It's okay to sleep only a few hours in a short period of time.

However, it is best to get more than eight hours of sleep a day for a long time. Keep yourself energized.

The sleep time of adults needs to be determined according to different age groups and physical fitness, and cannot be generalized.

If you are an adult between the ages of 18-64, it is best to sleep between 7-9 hours a day. However, due to different physiques, you can only sleep 6 hours or 10 hours a day, and the specific time varies from person to person. For adults over 65 years old, it is generally recommended to sleep about 7-8 hours a day, but some elderly people get up early in the morning and only sleep about 5 hours a day.

How long you should sleep depends on how you feel after sleeping. If you only sleep 5 hours a day, and you still feel 100 times more energetic when you wake up the next day, it means that your body can sleep for 5 hours. However, some people sleep 10 hours a day and wake up the next day still depressed, indicating that 10 hours of sleep may still not be enough.

In addition, adults should pay attention to ensuring regular sleep, avoid staying up late, and ensure regular sleep.