Is it normal for children to sleep for 8 hours? Usually we say that everyone should sleep for 8 hours every day to keep healthy. Although the harm of too little sleep is well known, according to a new study, too much sleep may also be harmful. Is it normal for children to sleep for 8 hours?
Is it normal for children to sleep for 8 hours? /kloc-It is normal for boys aged 0/7 to sleep more than 8 hours every day.
Scientists point out that babies before 1 should sleep 16 hours a day, and the sleep time will gradually decrease with age. Babies from 4 months to 1 year-old should sleep at least 12 to 16 hours a day, 1 6 to 14 hours when they are 2 years old, and 10 when they are 3 to 5 years old. Children aged 6 to 12 should sleep at least 8 hours a day.
7-year-old children are between 6 and 12 years old. Therefore, sleeping for 8 hours every day is in line with the requirements and normal.
Childhood is an important stage of growth, so we should ensure a good sleep.
Here are a few hygiene habits that make children sleep better, which need attention:
1, form a good habit of going to bed on time. Half an hour or an hour before going to bed, children should not be too excited, and parents should not tease their children too much. They can read books before going to bed and try to keep the children quiet. Making bedtime rules can help guide children to form psychological hints of falling asleep, such as taking a bath, drinking milk, brushing their teeth, telling 1 story, and then turning off the lights to sleep. It should be noted that once the rules are formed, they should not be changed easily.
2. Identify your child's sleep signals. Children will rub their eyes, pull their ears and be in a daze when they want to sleep. At this time, parents will help, and children can easily fall asleep quickly. In addition, it is normal for babies to wake up at night. When the child suddenly cries while sleeping, don't react too quickly. You can wait a few minutes first. Most children will fall asleep naturally after waking up for a few minutes at night. If the child keeps crying, you can find a suitable soothing method acceptable to both parents and children, such as using a pacifier.
The process of falling asleep is done in bed. When the child is sleepy but still awake, put him in bed and let him learn to sleep by himself. Once you learn to sleep independently, your child will naturally wake up at night and fall asleep again without crying.
4. Moderate outdoor exercise. If you want your child to sleep well, you should arrange your child's activities during the day and let him have fun. Only when he is tired will he sleep soundly at night.
Is it normal for children to sleep for 8 hours? 20-22 hours for newborns.
February baby 18-20 hours
1 year 15 hours
2 years old 14 hours
3-4 years old 13 hours
5-7 years old 12 hours
8- 12 years old 10 hour
12- 18 years and 9 hours
Adult 7-8 hours (not less than 6 hours)
60-70 years old and 9 hours
70-90 years old 10 hour
More than 90 years old
Should not be less than 10 hour.
People's sleep time?
Although the harm of too little sleep is well known, according to a new study, too much sleep may also be harmful.
Researchers at the University of California, San Diego, found that people who sleep for 9- 10 hours every working day seem to have more problems in falling asleep and sleeping quality, as well as other sleep disorders.
Sleep disorders include waking up in the middle of the night, waking up in the morning, unable to fall asleep again after waking up, and fatigue during daily activities.
In addition, compared with people who sleep eight hours a day, people who sleep only seven hours a night also say that it is more difficult for them to fall asleep and feel less energetic when they wake up in the morning.
According to the research results published in the journal Psychosomatic Medicine, people who want to have a good sleep may not have to set a sleep goal of more than eight hours.
Daniel Kripke, the author of the study, said that for people who sleep more than eight hours or eight and a half hours a night, it "may be a good idea" to consider reducing sleep time. But he also cautiously said that more research is needed to prove this point.
Previous studies have shown that long-term sleep deprivation is potentially harmful. For example, a report shows that if a person habitually sleeps less than seven hours a night, the risk of death in a certain period of time is higher than that of people who sleep more.
It can be seen that 6-8 hours of healthy sleep every day is the best!
Recently, foreign medical research found that many people who often feel tired are not sick or lack of sleep, but are caused by too much sleep! Why does excessive sleep affect mental and physical strength?
Because the blood circulation slows down during sleep, the nutrition and oxygen supply of the brain are greatly reduced. Sleep for too long, brain cells can't get enough oxygen and nutrition, so the activity ability is weakened. Too much sleep will reduce the activity of muscles and tendons, and muscles will get less oxygen and nutrition from the blood, so they will become relaxed and naturally feel tired.
Many people who sleep too much and feel tired can speed up their sleep, deepen their sleep and eliminate the feeling of fatigue and powerlessness if they reduce some sleep time and take appropriate physical exercise.
So sleeping more is not a good thing.
According to the body's biological clock, it is beneficial to sleep at night around 1 1 o'clock, because brain activity and metabolism need to get a full rest between 10 and 2 o'clock.
Too long sleep, like lack of sleep, will lead to mental fatigue, physical fatigue and decreased metabolic rate. Sleep should not be too long. If you sleep too long, your heart will slow down, your metabolic rate will drop to a very low level, and your muscle tissue will relax. Over time, people will become lazy and weak, and even their intelligence will decline. So people should not sleep too long, 7-8 hours of day and night is enough for adults. If you want to gain health by increasing sleep time, it will be counterproductive, increase diseases and shorten life expectancy.
Generally speaking, a normal sleep of 6-8 hours a day is enough. If you miss your sleep because of work or other things, you can make up for it according to the amount of delay. Generally, the total compensation does not exceed two hours.
Do some ordinary activities after getting up, and you will be full of energy and everything will return to normal. Too much compensation is not only useless, but also makes you more confused and even makes you dizzy, which is similar to the situation described in your question. This is because long-term brain relaxation and organ inhibition have a negative impact on the body's blood circulation and organs, resulting in hypoxia or malnutrition.
In short, sleep time varies from person to person, so it is impossible to set an absolute time. Usually we say that everyone has to sleep 8 hours a day to keep healthy, which is just an average. However, the proportion of ordinary people is still very large. The daily sleep time of ordinary people can refer to the basic sleep time value of about 8 hours.
Is it normal for children to sleep for 8 hours? Recently, according to the research published in the journal Science by Boston University scientists, staying up late for a long time will make people's memory decline, IQ decrease and even endanger people's health.
In China, more than 60% of children aged 6 to 17 sleep less than 8 hours, and the proportion of children aged 13 to 17 who lack sleep is as high as 8 1.2%. Schoolwork pressure has become the first factor affecting children's sleep. Today, we will talk about the dangers of staying up late, hoping that every child can develop good habits of work and rest.
Recently, scientists at Boston University filmed the video of the automatic cleaning process of the human brain during sleep for the first time.
It is found that during sleep, the activity of neurons in the brain becomes less intense, which makes the blood oxygen concentration in the brain change periodically, that is, a large amount of blood will flow out of the brain periodically, and then a watery liquid called cerebrospinal fluid will take the opportunity to flood in.
(Red is blood, blue is cerebrospinal fluid)
Cerebrospinal fluid is equivalent to a detergent for the brain. It can remove toxins from the brain, including amyloid beta protein, which is the chief culprit of Alzheimer's disease.
This kind of cleaning work can only be carried out in the sleep stage, which makes people wake up with a refreshing brain.
Therefore, if you often stay up late, the harmful substances metabolized by the brain during the day will not be removed in time. In the long run, it may lead to the accumulation of toxic protein and memory loss. More importantly, when you are old, autism and Alzheimer's disease may come to you!
Therefore, this study reminds us that sleep is very important for both children and adults. Adequate sleep will make people smart, while staying up late often will dull the brain, reduce IQ and be more likely to endanger health.
Children with poor sleep
You may also get poor grades.
Teenagers aged 6~ 17 are in a critical period of physical and mental development. However, sleep plays an important role in the growth and development of children. Long-term adequate sleep plays an important role in consolidating memory, promoting the development of brain function, promoting the recovery of physical strength and energy, promoting growth and development, enhancing immune function and protecting the central nervous system.
On the contrary, lack of sleep will bring serious harm to the growth and development of teenagers. And according to the data in the white paper, children who don't sleep well may also have poor grades.
However, schoolwork pressure is the most important factor leading to the lack of sleep among teenagers (67.3%), followed by mobile phones and computers (27. 1%), noise environment (24.8%) and so on. This has caused a bad cycle of children's academic pressure-lack of sleep-poor grades.
If the child doesn't sleep well, it is really harmful. If your children often stay up late, you must watch this TED talk: people who can't sleep well are full of "garbage" in their minds.
A survey by the Guardian also proves this point: Playing mobile phones and staying up late at night will lead to a decline in sleep quality and increase the incidence of mental illness among teenagers. It can be seen that regular sleep and adequate sleep are necessary conditions for the healthy growth of children.
The more you sleep, the better.
It's not worth the candle to stay up late.
Next, I want to share with you some authoritative scientific advice on sleep, especially for teenagers.
Adequate sleep is undoubtedly the most important thing-the National Biotechnology Information Center of the United States has conducted a study on a large number of children aged 4 or 5, and finally found that children who sleep for a long time have more normal body mass index, while children who sleep for a short time are more obese.
Moreover, children who sleep before 8 o'clock are more normal in weight than those who sleep after 9 o'clock in the evening; Children who get up after 7: 30 am have a more normal weight than those who get up before 6: 30 am.
But don't mistakenly think that the more you sleep, the better, and you can't "one size fits all" for children of different ages. The "Children's Sleep Guide" issued by the American Academy of Sleep Medicine suggests:
Baby 4 months to 12 months: it should be 12 to 16 hours.
1 to 2-year-old children: it should take 1 1 to 14 hours.
Children aged 3 to 5: It takes 10 to 13 hours.
Children aged 6 to 12: It should take 9 to 12 hours.
Teenagers from 13 to 18: It should take 8 to 10 hours.
But the reality is that as many as 75% of middle school students sleep less than 8 hours a day-this is the statistics of the American Academy of Pediatrics. Those students who don't get enough sleep will spend 2 hours more on sleep every weekend than normal people.
But this kind of sleep supplement can't save much money-these people will have more frequent dozing and drowsiness, they need more alarm clocks to remind them to get up, and they need more caffeine to refresh themselves.
In other words, as long as students give up sleep time in order to have more study time, their performance in class will be worse. Students who stayed up late wanted to make themselves better understand the learning content by staying up late, but the effect was just the opposite.