Is there a relationship between sleep and IQ?

Sleep has a certain relationship with people's IQ. Generally speaking, under normal sleep conditions, that is, to ensure natural sleep time, people can exert their normal IQ. I guess what you want to ask is whether bad sleep will affect IQ, and long-term bad sleep will definitely affect IQ. However, modern scientific research has found that there is not much difference in IQ as a whole. The only difference is that everyone has his own priority development field or direction, and whether everyone concentrates all his intelligence on his favorite occupation or activity. In the autopsy of Einstein's brain after his death, it was found that only 5% of his brain cells were used, while the other 95% were blank. Some people think that it is this 95% gap that ensures the full play of 5%. Just like a computer with too little free memory, it will affect the speed and even crash. Long-term sleep difficulties, in addition to diseases, mainly have environmental and human reasons. Environment refers to the surrounding noise, air freshness, indoor temperature, humidity, etc. And humanistic reasons refer to people's cognitive ability and social atmosphere. Just as people often say "busy" when they meet, it seems that saying "not busy" is out of date. Sleep difficulty and lack of sleep have now become the focus of people's daily attention, especially the elderly. As soon as we met, it was "I can't sleep, I am always dreaming, and I am tired of sleeping." In fact, a person's sleep time is controlled by his own biological clock, so you don't have to care too much, let nature take its course and ensure the normal requirements of the human body for sleep.