Dreaming is a normal and indispensable physiological and psychological phenomenon of human body. After people fall asleep, a small number of brain cells are still active, which is the basis of dreaming. Normal dream activity is one of the important factors to ensure the normal vitality of the body. Dream is a way to coordinate the balance of human psychological world ... Dream is a physiological activity of human body ... What are the signs? Newcomer. Do you still believe in dream interpretation? Are you kidding? ...