Never let your child sleep late; adequate sleep is one of the prerequisites for growth and healthy development. But more and more children are commonly sleeping late, and late sleep brings potential harm to children that parents are unaware of. Studies have shown that in terms of behavioral problems, children who sleep late at night tend to be aggressive and may also be accompanied by symptoms such as hyperactivity, poor self-control, lack of mental focus and emotional instability. 1, sleep late so that children do not grow taller According to the Ministry of Education’s height and weight survey of third-grade students, it was found that the average height of elementary school students is shorter every year. The future pillars of the country “dwarf”, which I’m afraid to partly “attribute” to the excessive pressure of learning, so that children write homework until midnight, long-term work and rest disorders, sleep deprivation. Late sleep or lack of sleep means too much time awake, which is an overstimulation for the body, which in turn triggers a stress response in the body and induces the adrenal glands to secrete adrenaline in large quantities. Adrenaline is a stress hormone, it will inhibit the function of the pituitary gland, resulting in the pituitary gland to reduce the secretion of growth hormone, so that children do not grow tall. 2, late sleep hurts the heart The liver is the “dumb daughter-in-law”, the work of the complaint, tolerance is very high, so the first to suffer from lack of sleep is not the liver, but the heart. Sleep-deprived children will produce excessive stress reactions, especially young children, they will feel tired due to lack of sleep, irritable, irritable, difficult to calm, and even show excessive stress reactions that can not sleep, and the more sleep deprived, the more emotional they become. If they are in a state of excessive hyperactivity for years, cardiovascular diseases, such as heart valve prolapse, will occur. So let children sleep late or poor sleep habits, is the same as sowing the seeds of cardiovascular disease for children, will come after the age of thirty-five, this buried cause will break out into cardiovascular disease. 3, late sleep makes children precocious sexual maturity There is a mother suffering from hyperthyroidism, holding her eight-year-old 10-month-old daughter together with the clinic. This little girl has been diagnosed as a precocious puberty patient in a major hospital. She is only 132 centimeters tall and weighs 26 kilograms, but her breasts have already developed. After the consultation, we learned that the child had been going to bed at 11:00 p.m. every night for years and waking up at 6:30 a.m. the next morning. The late sleep will also stimulate stress hormone secretion, inhibit growth hormone activity, and affect the normal regulation of sex hormones by the pituitary gland, so the child will not grow taller and have precocious sexual maturity. Health principle #1: It is not only when you are tired that you need to sleep, but when the time comes you must sleep. The liver has begun to assimilate at 3pm, so it is not advisable to let your child eat too much after 3pm, and a simple dinner is good, so that your child can go to bed early. Some parents think that their children will go to sleep on their own as soon as they are tired of playing, so they do not urge their children to develop the habit of sleeping regularly. When a child is exhausted from playing, he or she will eventually pass out and fall asleep, but this is usually preceded by an emotional phase of excessive excitement or nervousness, and becomes irrational. Good sleep habits do not develop automatically in children, but require adult assistance to develop them. When it’s bedtime and your child doesn’t want to go to sleep, adults need to put a little more thought into preparing a regular bedtime ritual to help them get into the habit. For example, telling bedtime stories and calming them down so they don’t have to fall asleep until they are exhausted, but can go to sleep contentedly and wake up contentedly the next morning. This is the ideal pattern of rest for children. Health principle 2: To urge your child to go to bed early, you must first live your own life properly. There are several reasons why adults are unable to urge their children to go to bed early. There may be full-time care of children’s mothers, a person’s distractions, not the day’s rhythm of life is not properly arranged; may also be parents work too late, children waiting for their parents to accompany them to sleep, the results wait until midnight; there may be parents return home from work have been six or seven o’clock at night, cooked dinner, after eating, the time has passed eight or nine o’clock, until bedtime is naturally after ten o’clock; there are also late Parents who go home from work cherish the time they spend with their children, so they delay their children’s bedtime; and children who sleep with their grandparents sometimes see that there are still people awake at home, so they can’t go to sleep, so they develop the habit of sleeping late with adults. A good night’s sleep strengthens brain function and develops the trait of easy relaxation, allowing children to stay in top condition. Simply put, “the mind is clear and the body is relaxed”. Sleeping late may cause children to be restless and cry, timid personality, lack of mobility, weak willpower, affect the development of the nervous system, affect intellectual development, but also harm the child’s heart, sowing the seeds of future cardiovascular disease, but also make children grow taller, and even precocious. Health principle 3: The foundation of human health throughout life depends on the liver and thymus gland before the age of 7. The good functioning of human health depends on a solid foundation laid before the age of seven. Running a regular life for your child in order to develop a sense of rhythm in the body is an important task at this stage, and sleep is a major key to creating a regular rhythm of life. During sleep, all the perceptions received during the day are transformed into all the organs and tissues in the body to assist in their growth, development and repair, including the circulatory system, digestive system, endocrine system, skeletal system, nervous system and immune system. It is only during sleep that a young child’s body is able to rest and grow, and recover enough vitality for the next day. The most important organ involved in all these activities is the liver. It is often said that “early to bed and early to rise is good for the body”, but what time do you sleep to meet the criteria of “early to bed”? In terms of the liver’s assimilation, preschoolers should fall asleep between 6:30 and 8:00 pm, while adults must fall asleep between 9:00 and 10:00 pm. To be able to fall asleep at this time, it is considered “early to bed”.