According to the Clinical Psychology Review, there are at least 26 definitions of orgasm. In clinical terms, an orgasm is a sudden discharge of sexual tension that results in muscular contractions and changes in heart rate, blood pressure and breathing patterns.
In other words, an orgasm happens suddenly after building sexual tension, creating an intense sensation of pleasure. In men, orgasm may be accompanied by ejaculation.
More About Orgasm
Orgasms are complex physiological and psychological responses to sexual activity, which makes defining them in a precise way quite difficult. Orgasm often involves the stimulation of sexual organs such as the penis, clitoris or G-spot, but orgasm can also occur in response to stimulus on other parts of the body, or even in response to thoughts or visual stimuli.
An orgasm includes the following phases: the excitement phase, the plateau phase, the orgasmic phase and the resolution phase. The length of these phases varies individually, and based on the person's physiology.
An orgasm is often considered the end of intercourse, although that does not need to be the case.
It’s rare that both partners can orgasm at the same time. If your goal is to reach orgasm, make sure that your partner is satisfied as well. Orgasms are a wonderful part of sex, but they are not the only source of pleasure. Try to explore sex beyond orgasm through tantra or other techniques.