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Human sexual activity, human sexual practice or human sexual behaviour is the manner in which humans experience and express their sexuality.
People engage in a variety of sexual acts, ranging from activities done alone (e.g., masturbation) to acts with another person (e.g., sexual intercourse, non-penetrative sex, oral sex, etc.) in varying patterns of frequency, for a wide variety of reasons.
Two examples that are criminal offences in most jurisdictions are sexual assault and sexual activity with a person below the local age of consent.
Sexual activity can be classified in a number of ways: acts which involve one person (also called autoeroticism) such as masturbation, or two or more people such as vaginal sex, anal sex, oral sex or mutual masturbation.
3 (June 2007): 357–68) reported that sexual behavior with a partner on one day significantly predicted lower negative mood and stress, and higher positive mood, on the following day.
People engage in sexual activity for any of a multitude of possible reasons.
It is related to the idea that opposition between two people can heighten sexual tension, attraction and interest.
It has been shown that sexual activity plays a large part in the interaction of social species.
Most people engage in sexual activity because of pleasure they derive from the arousal of their sexuality, especially if they can achieve orgasm.At times, a person may engage in a sexual activity solely for the sexual pleasure of their partner, such as because of an obligation they may have to the partner or because of love, sympathy or pity they may feel for the partner.A person may engage in sexual activity for purely monetary considerations, or to obtain some advantage from either the partner or the activity.Sexual arousal can also be experienced from foreplay and flirting, and from fetish or BDSM activities, or other erotic activities.Most commonly, people engage in sexual activity because of the sexual desire generated by a person to whom they feel sexual attraction; but they may engage in sexual activity for the physical satisfaction they achieve in the absence of attraction for another, as in the case of casual or social sex.
Sexual activity can be regarded as conventional or as alternative, involving, for example, fetishism, paraphilia, or BDSM activities.