Some people don't like to turn off the lights when they sleep, but in fact, not turning off the lights is harmful to people's health, especially to children, so you must turn off the lights when you sleep.

1, leaving the lights on when sleeping will lead to low immunity of the baby. When the baby sleeps at night, the body will secrete something called melatonin, which is to avoid cell damage. If the lights are turned on all the time at night, the secretion of melatonin will decrease, and the corresponding baby's immunity will also decrease.

Second, leaving the lights on at night will lead to short stature. Night is the peak of growth hormone secretion, but if the light is on all the time, it will automatically default that it is daytime, so the secretion level of growth hormone will not reach the high level at night, and the child will naturally grow up.

Third, turning on the light at night will hurt your eyesight. Although your eyes are closed when you sleep at night, there will still be light through your eyelids to stimulate your eyes. My child's eyes are very fragile. If I am exposed for a long time, my retina will be damaged and the probability of myopia will be greater.

You can't go into deep sleep at 4 o'clock if you don't turn off the lights. The light under any circumstances will cause a kind of psychological pressure, which will make the sleeping baby fidget and fidget, making it difficult to fall asleep. But if she sleeps in the light for a long time, her sleep time will be shorter and she will always get up at night.

Fifth, turning on the light to sleep may lead to precocious puberty in children. Turning on the light to sleep will reduce the melatonin secretion of children, disorder the sleep system, and stimulate the endocrine and estrogen of follicles.

Therefore, it is best to turn off the lights when sleeping, especially for the growth and development of children.