How many hours of sleep is the best night s sleep?

As long as the average adult ensures that he goes to bed before 11 o'clock and gets 7-9 hours of sleep a day, he or she can achieve the best state of sensory and physical function.

Sleep time varies depending on the age group:

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.

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.

<>1. In fact, the best time to sleep is probably 7-8 hours. Not really. For most people, this time can be counted as an average time, but it is not suitable for people who sleep for a short period of time.

You may have both of these people around you. One of them doesn't sleep much every day, but is still in good spirits, while the other needs a long sleep time, otherwise it is difficult to get rid of fatigue. Human sleep has deep sleep and light sleep, and the cycle is hours.

2. The brain is at rest during deep sleep, while dreaming is during light sleep. Deep sleep is divided into four phases that gradually deepen. After the peak of sleep, it gradually becomes lighter.

This cycle is hours, and finally returns to a state of light sleep. To stay awake, it's best to wake up during light sleep hours. If you wake up in a deep sleep, your brain will wake up when it's resting, so even if you wake up, you will feel groggy and it will take a long time for your brain to wake up.

That's why we sometimes want to sleep more and more.

3. The harm of excessive sleep, increasing the probability of depressionRelated studies have found that long sleep time will increase the probability of depression. If you only sleep seven to nine hours a night, the relative probability of depression is lower. Once this time is exceeded, the probability of depression can be more than double that of seven to nine hours.

Damage to the brain, if you sleep too much, can cause damage to your brain in the long run, causing your brain to function as a decline. There are also studies that have found that sleeping brains outside the normal range will age two years above the normal range.

4. To make up for the lack of sleep, take a nap for 15-30 minutes at noon. This also follows the sleep cycle, most importantly getting up during the early light sleep period. Even if it's just for a short time, the body can rest and the brain will become clear.

However, more than 30 minutes is not acceptable. The deeper you sleep, the less likely you are to wake up, which is counterproductive. It's also good to have some coffee before bed.

The effects of caffeine will be visible 30 minutes after drinking coffee, so take a half-hour nap after drinking coffee to get up.

I think 8 hours is the best choice, these 8 hours can make the body well, recover, and not easy to make people dizzy.

It is best to take about 7 hours for adults, and about 10 hours for children.

A normal person should maintain about eight hours of sleep a day. Lack of sleep can lead to a lack of energy, and excessive sleep can also lead to a worse complexion.