Human sexual activity

Sexual activity, sexual practice, sexual behaviour or, very broadly, sex is the set of activities people engage in that typically includes any combination of physical intimacy, physical contact with the reproductive organs (genitals) or erogenous zones, and erotic stimulation. Sexual acts range from activities done alone to acts with another person or multiple persons in varying patterns of frequency, for a wide variety of reasons. Sexual activity usually results in sexual arousal and physiological changes in the aroused persons, some of which are pronounced while others are more subtle. Certain conduct is intended to arouse the sexual interest of another or enhance one’s already-existing sex life with another or between individuals.