A popular science book by an English behavioral biologist is devoted to the study of pleasure. The author talks about the emergence of pleasures in the process of human evolution, explains how they, together with their alter ego - pain - helped our ancestors survive; explores the biological mechanisms of desire, happiness, boredom. A book about pleasure cannot remain silent about sex - an entire chapter is devoted to it, telling about sexual behavior. In this book, readers will find information about famous people, idols of millions, who suffered from alcoholism or indulged in excesses. A separate chapter talks about chocolate - a pleasure that does not have a dark side, like alcohol, food and games. The book is intended for a wide range of readers.