Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Human sexual activities or human sexual practices or human sexual behavior refers to the manner in which humans experience and express their sexuality. It encompasses a wide range of activities, such as strategies to find or attract partners (mating and display behavior), interactions between individuals, physical or emotional intimacy, and sexual contact. The term sexual activity can refer both to acts involving two or more people, as in sexual intercourse, oral sex, or mutual masturbation, and to the one person activity, such as masturbation.