It is said that you should sleep enough for eight hours a day, is there any scientific basis?

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.

The circadian rhythm is encoded in our genes, and it controls the protein molecules that control our activities. The biological clock also changes according to the diurnal changes of the earth, and this cycle will not change with the invention of electric light, or the update of electronic products, let alone with the rhythm of our lives.

<> most people believe"The Eight-Hour Theory", thinking that if you sleep eight hours a night, you will get enough sleep. Others posted online** comparing six hours to eight hours to reinforce our belief in sleeping eight hours a day. When we're feeling down, we can also be convinced that we're not getting enough eight hours of sleep.

This kind of rough"The Eight-Hour Sleep Theory"Messed us up.

The amount of sleep you get is related to your age. As the saying goes, you can't sleep when you're young and you can't sleep when you're old, and that's true. But is there enough sleep?

It depends on the quality of sleep, I think as long as you wake up full of energy, not sleepy or tired, and don't get up and don't think about it, it's good. Now people work under too much pressure, they have to be on duty at night, sleep problems, insomnia has become a common problem, people with long-term insomnia will have poor spirits, temper, hair loss, etc., but this problem has not been paid attention to, and there is no good solution.

Human sleep is composed of alternating slow-wave sleep and heterogeneous sleep, and the whole sleep should alternate 4-5 times, and heterogeneous sleep is characterized by dreaming. In other words, I can have 4-5 dreams per person in my sleep. But why do most of us say that we sleep all night without dreams, or have dreams, while a few say we have several dreams!

This is because usually we wake up in slow-wave sleep, and in slow-wave sleep, we have no memory of the dreams in heterogeneous sleep! The reason why you can remember your dreams is because you wake up at this stage of amorphous sleep, and the number of times you wake up in amorphous sleep can help you remember how many dreams you have had. When you wake up and fall into slow-wave sleep, you can only know that you are dreaming, but you may not remember what the dream was about.

If you wake up from aphasic sleep and need some time to fall back asleep (slow-wave sleep), you will not only remember your dream, but also the content of your dream!

Sleeping 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.

Seven to eight hours of sleep a day is optimal, but it is not necessarily forced, because of a person's differences and deep sleep, generally people with less dreams can sleep six hours at night to fully recover their energy, and like some people fall asleep slower than light sleep, and some nightmares may continue to sleep for ten hours is difficult to recover, so it should be analyzed according to the specific situation.

It is not that people who sleep enough for 8 hours a day will not be sleepy, which also involves many factors such as sleep quality, seasonal changes, physical state and physique, and environment. It seems that I slept for 8 hours, but because the proportion of deep sleep is far less than a quarter during sleep, the body cannot be fully relaxed and rested, and the body is still relatively prone to fatigue after waking up, and it is easy to get sleepy during the day.

Scientists 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.

Not really, different ages require different amounts of sleep.

People need to get enough sleep every day, but the exact amount of sleep they need depends on their age. Toddlers and preschoolers should sleep between 11 and 14 hours a day, newborn babies sleep up to 14 to 17 hours a day, while adolescents should sleep between 8 and 10 hours a day, adults should sleep between 7 and 9 hours a day, and the elderly sleep less and 7 to 8 hours a day is fine.

Although there is a direct relationship between the amount of sleep a person gets every day, it is most appropriate for a normal adult to get 7 to 8 hours of adequate sleep a day so that the body can stay healthy. If adults sleep***, ensure adequate sleep every day, 7 hours can also maintain good health, if the quality of sleep is poor, even if you sleep enough for 8 hours, the body can not be effectively recovered. Therefore, it is very important to ensure the quality of sleep in daily life.

People often have bad symptoms such as short sleep time, difficulty falling asleep and shallow sleep, and in severe cases, insomnia and sleep disorders will occur, which will make people feel very tired during the day, and their memory will become worse and worse. Over time, it will also affect the body's endocrine, increase the risk of cardiovascular disease and diabetes, coronary heart disease and stroke, and even shorten life. Therefore, it is essential for people to ensure adequate sleep and high-quality sleep in their daily life, which is the foundation of human health.

Although it is not true that you must sleep enough for 8 hours a day, it is true that the human body needs enough sleep, and adults must ensure more than 7 hours of sleep, and if there is a poor sleep quality, you must adjust it as soon as possible. It is best to develop a fixed work and rest time, do not look at electronic devices before going to bed, and exercise moderately before going to bed to promote dopamine secretion in the body and try to improve your sleep quality. People should also pay attention to adjusting their mentality in their daily life, try to maintain a positive and optimistic sunny attitude, and let the nerves relax, so that it is easier to have high-quality sleep.

It's true. Because, sleep is something we have to do every day, and it is also a normal physiological need. About one-third of a person's life is spent sleeping.

A good night's sleep not only improves memory, creativity, energy and good condition, but also reduces the risk of obesity, type 2 diabetes, high blood pressure, respiratory diseases, heart disease, depression, and neurological disorders.

It's true. Because getting enough sleep can make you more energetic. This is also a good routine and should be cultivated.

Because in this way, you can ensure adequate sleep, promote blood circulation, improve the body's immunity, promote metabolism, prevent diseases, and prevent cancer.

8 hours of sleep can replenish the energy needed by the human body, can relieve physical fatigue, and can start a new life in the day, so you must sleep enough for 8 hours a day.

Because sleeping 8 hours a day is very good for the body, it can make the mental state very good, and can improve the body's immunity.

Because 8 hours can give your brain a very good rest, you can get your body back to the best state.

Because in this way, the person's mental state can be guaranteed, and it can also play a relaxing role and relieve the fatigue of the body.