Sleep and dreams have always been shrouded in mystery, inaccessible to human understanding. Why do we lose contact with the outside world every day? Why do you need to sleep? Is it worth attaching importance to dreams and why do people see them at all? The mysteries of sleep were sought for explanations - both mystical and based on a scientific approach. The emergence of the latest methods of studying the activity of the brain, the modern possibilities of genetic and biochemical research have made it possible to find out why, how and how much we actually sleep. What modern science knows about sleep—as well as conditions such as insomnia, lethargy, lucid dreaming, and more—is the subject of this book.
