Does sleeping too long have an effect on health? How long is a normal sleep time?

Generally speaking, adults need 7 to 8 hours of sleep every day, at least not less than 6 hours, and up to 9 hours, less or more, can not achieve the role of sleep.

1.Get regular sleep and get enough sleep.

Generally speaking, the most suitable time for the human body to sleep is from 9 o'clock to 10 o'clock in the evening, from 11 o'clock, the body organs will begin to detoxify themselves, so it is recommended that you must develop regular sleep habits, do not sleep more than 11 o'clock at the latest, which will help you maintain the normal operation of your body functions. There are many long-lived elderly people, most of their sleep habits are to go to bed at 9 o'clock at night and get up at 5 o'clock in the morning, which is a very scientific sleep habit, and the sleep time is controlled at 8 hours. <>

2.Lack of sleep time can be appropriate to make up for sleep.

Of course, not everyone can guarantee enough sleep time, especially friends who are busy with careers, it is inevitable that they will work overtime and stay up late or something, people who lack sleep must not be very energetic, and occasionally yawn, when there is leisure, you can take a nap on the spot, whether it is half an hour or ten minutes, as long as you can supplement a little sleep, it can help you recover a certain amount of energy. <>

3.Proper napping has a health effect.

In addition to making up for the lack of sleep time, napping can also help you relieve fatigue and restore energy, especially in the very sleepy summer, a half-hour break at noon every day can help you feel energetic in the afternoon. But be careful, don't take a nap too long, between 20 and 40 minutes, if it is too long, it will make you more tired. <>

In short, sleeping is a major event in life, sleep should be scientific, do not stay up late, especially in a very sleepy state, and insist on not sleeping, then the body is bound to suffer some damage.

It's also unhealthy if you sleep for too long. Sleeping for a long time can lead to a decrease in immunity and sluggishness. A normal sleep of seven to eight hours is sufficient.

The sleep time of adults is generally about 8 hours. If you sleep too long, it is not good for your health because excessive sleep can disrupt a person's normal sleep schedule.

The normal sleep time of people should be kept at about 8 hours, and sleeping too much will put their nervous system in a dormant state, which will not play a role in maintaining health for the body.

Hello, high-quality sleep is a rule to follow, not the longer you sleep, the better, Chinese medicine has a mantra which has a sentence that hurts the body for a long time, long-term sleep will make people unable to sleep, meridian flow injection is an important law diagram of the operation of various organs of the body, people are best to fall asleep when the liver is running, the ancients argued that the liver runs poorly filial piety time period, people need to cooperate with the operation of the liver to lie still, even if you can't sleep, you have to close your eyes and rest, at this time the blood of the whole body needs to be collected to the liver to repair the body, at this time the rest is good, the next day can be energetic, Therefore, it is best to be in a deep sleep during the period from 11 o'clock in the evening to 3 o'clock in the morning, which is conducive to the renewal of the body and the balance of blood.

There is also a theory about sleep, sleep has a cyclical biological rhythm, that is, it goes through four different stages of the cycle in about 90 100 minutes, which can be divided into the sleep onset period, light sleep period, deep sleep period, and rapid eye movement period. Sleep onset is the beginning of sleep, and the feeling of drowsiness belongs to this stage, when the brain waves begin to change, the frequency gradually slows down, and the amplitude decreases. The light sleep period is the beginning of formal sleep, which belongs to the light sleep stage, when the brain waves gradually progress irregularly, and the frequency and amplitude fluctuate.

It is not easy to be woken up during the sleep period, when the brain waves change greatly, the frequency is only 1 2 weeks per second, but the amplitude increases greatly, showing a slow curve. REM brain waves change rapidly, with high-frequency, low-amplitude brain waves similar to those seen during waking states, but with distinctive jagged waves. Therefore, healthy people usually have four sleep cycles every night, one is about one and a half hours, and four is about six or seven hours, so it is also said to be eight hours.

In my personal opinion, seven hours of sleep is enough, and no matter how much you sleep, you will become very lazy and don't want to get up, which is actually caused by the lack of yang energy in the body.