The writer presents the phenomenon of sleep and the surrounding dreams, visions, scientific, religious and legendary thought, through ten chapters during which he deals with why God does not sleep, what human being, body functions during sleep, sleep as a biological phenomenon, modern theories in the causes of sleep, and sleep stages and the body during it , With a presentation of the forms and patterns of long sleep of the wisdom mentioned in the Holy Qur'an (the sleep of the people of the cave - the sleep of Uzair) alongside dreams and visions, and what health specifications of the place of sleep and the truth of the hypnosis and the sleep of animals.
