First, the disorder of biological clock is the most likely to lead to insomnia. Such people generally appear in some people who like to stay up late. They always go to bed late, but they get up late the next day, so their life patterns will be fixed in such a period of time. It's hard to sleep at night. Although their daily sleep time can reach important standards, this unreasonable rest time will also bring a certain burden to their bodies, so that their endocrine disorders will have a certain impact on themselves.
Second, congenital insomnia leads to sleep disorders, which vary from person to person, because some people can fall asleep as long as they lie in bed for less than one minute, and some people can hardly fall asleep in bed for half an hour. I belong to a group of people with congenital insomnia, and my sleep time is usually between half an hour and an hour. It is basically difficult to fall asleep, but in order to improve this situation, I will soak my feet with hot water every night and drink a cup of hot milk before going to bed. One hour before going to bed, I won't do any strenuous exercise, and I will control my emotions, and there won't be too violent ups and downs. This is also very helpful for you to fall asleep. You can try it and listen to some soothing music to adjust.
Third, I was too idle, which actually caused insomnia. Another point is that I am too idle and not tired at all, so when I go to bed at night, because my brain doesn't feel tired, it will make people particularly difficult to fall asleep. If you are such a reason, you can do some running, squatting and other exercises two hours before going to bed at night to increase fatigue.