Orgasm

Orgasm, or sexual climax, is the sudden release of accumulated sexual excitement during the sexual response cycle, characterized by intense sexual pleasure and rhythmic, involuntary muscular contractions in the pelvic region. It is controlled by the autonomic nervous system and experienced by both males and females, with responses including muscular spasms, euphoria, and vocalizations. The period after orgasm, known as the resolution phase, is typically relaxing due to the release of neurohormones such as oxytocin, prolactin, and endorphins. In clinical contexts, orgasm is defined by these muscular contractions along with characteristic changes in heart rate, blood pressure, and respiration. However, definitions vary widely; at least 26 distinct definitions exist in the scientific literature. There is debate over whether certain sensations—such as those from G-spot stimulation alone or extended orgasms lasting minutes—should be classified as orgasms, as they may lack the involuntary contractions central to the clinical definition. These experiences are subjective, extremely pleasurable, and often felt throughout the body, with a mental state described as transcendental. Modern findings also support a distinction between ejaculation and male orgasm. Orgasms usually result from physical sexual stimulation—of the penis in males (often with ejaculation) and of the clitoris or vagina in females—via masturbation, penetrative or non-penetrative sex, or other activities. They can also be achieved through psychological arousal alone, such as during sex dreams (nocturnal emissions) or in individuals with spinal cord injuries. Reaching orgasm may be difficult without a suitable psychological state. Health effects include a temporary decrease in metabolic activity across large parts of the cerebral cortex, with no change or increased activity in limbic brain areas. Sexual dysfunctions like anorgasmia exist, and the importance of orgasm for sexual satisfaction varies between individuals. Theories about its biological and evolutionary functions also differ.