SEX CAN BE THE GREATEST source of pleasure and happiness in our lives—it can boost our personal sense of well-being and health, and it also fosters precious feelings of intimacy with a partner. While sexuality used to be viewed as a “private matter,” today it is featured in magazines, newspapers, movies, and now on the Internet; indeed, our exposure to the subject is greater than ever before. While this is generally a good thing, the information is not always correct or adequate, and it can give confused messages. With so much apparent interest in sex, I felt what was needed was a reliable source of detailed and accurate information