The best amount of sleep an adult can get in a day is a few hours

Sleep should not be too long or too short, otherwise it will not be good for physical and mental health. So, when is the best time to sleep and how long? The best time to sleep is between 11 p.m. and 6 a.m. the next morning. So, the optimal amount of sleep for adults is 7 hours a day.

Professor Xu Jian, vice president of Shanghai Hospital of Traditional Chinese Medicine and director of the Institute of Sleep Diseases of Shanghai Hospital of Traditional Chinese Medicine, revealed the latest research yesterday showing that adults over 20 years old have the best sleep time of 6 hours and 30 minutes a day.

The results of this study are determined according to the principle of the human biological clock, as well as the neuroendocrine system, growth hormone, internal organ burden and protein synthesis, daytime mood changes, ** elasticity, habitual diet and other comprehensive factors.

Xu Jian said that sleep is as important as breathing and heartbeat for people's health, and adults can ensure that they have 6 hours and 30 minutes of good quality sleep every day, so that the brain has enough time to rest, and their mental state during the day can be adjusted to the best, and the decline of body function will be significantly slow, which is very beneficial to physical and mental health.

However, not every adult can achieve 6 hours and 30 minutes of sleep, and many people suffer from insomnia. The Institute of Sleep Diseases of Traditional Chinese Medicine of Shanghai Hospital of Traditional Chinese Medicine yesterday announced a survey of 2,421 insomnia patients who visited the hospital last year, and found that the number of female insomnia patients increased significantly, accounting for 63 of the total number, and 31 50-year-olds accounted for it, which was 6 percentage points higher than three years ago. The survey also found that among the insomnia patients, there are many cadres, managers, and managers.

Xu Jian believes that this group of people is often the "backbone" of society, and their fast-paced life, higher-than-ordinary work pressure, and irregular life and rest make them a high-risk group of insomnia. Many young white-collar workers often stay up late due to irregular lifestyles, resulting in biological clock disorders, and are also easily troubled by insomnia.

Xu Jian also stressed yesterday that the time when the secretion of sleep-promoting substances in the body is more vigorous is around 10 o'clock in the evening. Studies have found that slow-wave sleep is the best sleep state, and slow-wave sleep mostly occurs around 10 o'clock in the evening, and after 0:00, the best time to enter deep sleep is missed before falling asleep, which can easily lead to fatigue after waking up, unstable sleep, and decreased sleep quality, thus causing insomnia symptoms.

Generally speaking, adults need 7-9 hours of sleep per night, and if the sleep time is reduced by 1-2 hours per day, it will also have negative effects on health, such as easy fatigue, poor concentration, memory loss, decreased immunity, etc.

And for kids and teenagers, more sleep is needed because the body and brain are still developing. According to the American Academy of Pediatrics, preschoolers need 10-13 hours of sleep per night, and teens need 8-10 hours of sleep.

Therefore, if an adult reduces the sleep time by one or two hours a day, it may cause a certain negative impact on health, but it is not necessarily called staying up late. And for children and adolescents, the shortening of sleep time per night can have a more obvious impact on the development of the body and brain, and special attention should be paid to it.

In summary, the reduction of sleep time each night has a certain negative impact on human health, so it is recommended that everyone maintain sufficient sleep time, 7-9 hours a day is the best. At the same time, everyone's sleep needs are different and should be adjusted according to their own situation.

6-8 hours is optimal, and if you are sleeping deeply, 5-6 hours can also make up for fatigue.

Personally, I think that the best sleep time for adults is 8 hours, and sleeping longer will only make you more sleepy.

The best time for adults to sleep is 7-8 hours, preferably at 11 p.m. and wake up at 7 8:00 a.m. This time is the best time for adults to rest.

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.

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.