Is it true that "children sleep too much and grow fast" As we all know, the genetic proportion of children's height is 70%, which means that the efforts of the day after tomorrow can also "go against the sky and change their lives". The research and investigation found that in the remaining 30%, the influence of sleep on height is in the first place, surpassing the importance of food supplement and diet that most parents think, but it does not mean that more sleep can make them grow taller and quality sleep can take effect. It can be seen that "children sleep and grow fast" has certain scientific truth. So why is sleep so important for height development?

1, growth hormone

High-quality sleep can promote children's pituitary frontal lobe to secrete growth hormone, so that their brains can get enough rest, so that bones can also be allocated more nutrients. Studies have shown that the secretion of growth hormone is very small during the day, and the secretion of growth hormone during sleep can reach three times or more than that in non-sleep state.

Under the premise of deep sleep, growth hormone can be secreted in large quantities, and the two most vigorous periods are 2 1:00- 1:00 and 5:00-7:00, respectively. Therefore, if you want your child to grow taller, you'd better go to bed before 8: 30 in the evening, and not later than 2/kloc-0 in the evening.

Recommended duration of the American Academy of Sleep Medicine:? 4- 12 months infant sleep 12- 16 hours; 1-3 years old children 1 1- 14 hours; Children aged 3-5 10- 13 hours; 6- 12 years old children 9- 12 hours; 13- 18-year-old adolescents 8- 10 hour.

2. Relax the bones

When children enter deep sleep, the bones that affect their height, such as the human spine and leg bones, are released from the pressure of their own weight, so natural joints can get opportunities to grow, so they will grow faster than those in non-sleep state.

The lengthening of children's bones is accomplished by the proliferation of epiphyseal chondrocytes in joints. Therefore, you can grow freely after you completely relieve your weight load.

This is why we say that a person is the tallest in the morning. Generally, the height of a child when he gets up in the morning is at least 0.5 ~1cm higher than that before going to bed at night.

If you don't pay attention to this, it's no use sleeping more.

All in all, it is not that the longer a child sleeps, the higher the secretion of growth hormone will continue to rise and the higher the child will grow. In fact, the most important thing is to see if the child has entered a deep sleep state.

According to a scientist observing the EEG changes of children's sleep in 1950s, it is found that human sleep can be roughly divided into two states: one is shallow sleep; One is deep sleep or deep sleep.

The prerequisite for growing taller is to enter a deep sleep state at a fixed time at night. If you sleep more and sleep all day, it will not promote the increase of growth hormone, and it will not help you grow taller. Especially for children now, you usually have to wait until you are tired of playing and get up when you have enough sleep, but this is not conducive to their height development. Parents should do the following things to help their children develop correct sleep habits.