Dreams are normal human physiological phenomena, and they only occur during sleep. Under normal circumstances, everyone will have dreams, but after waking up, it is possible to feel that they did not dream, because each person has different degrees of dream perception, so there is no need to pay too much attention to it, and it usually has no effect on the body. As soon as you fall asleep, dreaming is mostly considered to be related to shallow sleep and short deep sleep period, the reason for this result is mainly psychological factors. It is often said that “there are thoughts in the day and dreams in the night”, if you feel dreamy and always thinking about the problem, it will cause you to dream again at night, and this will be a vicious circle in the long run. Secondly, physiological factors, such as too full or too hungry before bed, drinking coffee, tea, strenuous exercise before bed to mental hyperactivity, the night cortical cells are not inhibited, will also cause more dreams. The third is environmental factors, poor sleep environment or sleep environment change, sleep process by the stimulation of various environmental factors outside the body, such as light, temperature, sound, etc.. To sum up, dreaming is normal, as long as it does not affect normal life, do not panic. To maintain a good state of mind, with a positive attitude towards the phenomenon of dreams, long-term dreaming is not to worry, you can weave the dream images into a beautiful scene, which will help a lot to sleep.