Insomnia is defined as facing the specter of fears and illusions, while the power of sleep is what humans strive to reach for the comfort of the body and soul. As for excessive sleep before life's tests, it is a symptom that affects many of us, and we find energetic and energetic people who often sleep, so they wake themselves up daily, in order to accomplish their work. We spend a lot of time in our lives sleeping and trying to reach it, so a pioneer in psychology and philosophy like Professor Dr. Ahmed Fouad Al-Ahwani had to stop in front of it. In this book, the late Major Al-Ahwani discusses the sleep of humans and animals, and the most important studies that have been conducted on their sleep and their results, going through the most important sleep stories of thinkers, and then moving on to explain how to achieve comfortable sleep for humans, starting with: the place of sleep, the hour of sleep, methods of sleeping and their implications for the psyche. The sleeper, comfortable sleep, the physiological conditions of the sleeper's body, the causes of the sleeper's disturbance, even reviving the body immediately after waking up. Hypnosis has its place in this book with explanation and clarification, as does somnambulism or sleepwalking. Al-Ahwani cannot study sleep without dreams, so he stops at Freud's interpretation of dreams, before moving on to insomnia: its causes, symptoms, problems, and treatment.