Many mothers feel that their children will grow taller if they keep up with their diet and exercise. In fact, many people ignore the impact of sleep on children. A, the harm of sleep deprivation 1, affect the growth and weight growth in addition to genetics, nutrition, exercise and other factors, but also with the secretion of growth hormone how much is closely related. Growth hormone is secreted more after a person is asleep, sleep enough to help grow taller. 2, reduce the body’s immunity Sleep is the process of strengthening the body’s immunity, frequent lack of sleep will make the body’s immunity is reduced, which will lead to a variety of diseases, such as neurasthenia, myopia, loss of appetite, etc., but also easy to catch a cold. 3, affect the brain and mental health sleep deprivation will make the child’s attention is not easy to focus, memory is reduced, prone to depression, irritability and irritability. Or anxious and nervous, depressed and lonely, etc. Experts suggest that for children to grow taller, it is best to go to bed before 8:30 p.m. and not later than 9:30 p.m. You can tell him a story before going to bed and get up after 7 a.m. The two stages where the most growth hormones are secreted are 21:00-1:00 and 5:00-7:00. If you don’t fall asleep or are already awake during these two golden hours, then your child’s growth will be greatly reduced. Second, how long do children need to sleep Babies generally need 16-18 hours of sleep a day, preschoolers 11-12 hours, school-age children need at least 10 hours of sleep, teenagers 9-10 hours, and adults 7-8 hours. Many children are missing half an hour to an hour of sleep a day, which may not seem too serious, but like any debt, sleep debt has to be paid sooner or later, and chronic sleep deprivation can lead to problems with attention levels, motivation and test scores. Third, how to make children sleep better 1, help children to develop good sleep habits This should start from infancy, such as do not develop the habit of drinking a bottle to sleep, should be put in bed when they are awake and waiting to fall asleep. 2, help children to establish a healthy and regular sleep schedule At three months of age, parents should start to let them develop regular sleep habits. For children under the age of ten, make sure they are in bed by 9 p.m. 3. Control the light in your child’s room Melatonin is an important substance that helps humans sleep, so reducing the light in your child’s room at night will help them get a better night’s sleep.