A book is a medium for recording information in the form of writing or images, typically composed of many pages (made of papyrus, parchment, vellum, or paper) bound together and protected by a cover. The technical term for this physical arrangement is codex (plural, codices).The characters were believable and I cared about them,” “The plot had so many twists and turns I couldn't put the book down.” Specific praise helps browsing readers get a better sense of why your book is so goodReading has been shown to put our brains into a pleasurable trance-like state, similar to meditation, and it brings the same health benefits of deep relaxation and inner calm. Regular readers sleep better, have lower stress levels, higher self-esteem, and lower rates of depression than non-readers.