orphans answered Wednesday November 26 2008, 3:07 am: when you have sex, and u 'come' or when it feels good. for the science behind it:
An orgasm is the release of built-up muscle tension resulting from sexual activity. It produces rapid muscle contractions usually in the genital and anal area, but these contractions can also be throughout the body. Most people find these muscular contractions very pleasant. In both men and women, an orgasm is sometimes accompanied with the release of ejaculatory fluid. Ejaculation is much more usual in men than it is in women. Only about 10 percent of women report ejaculating during orgasm.
Orgasms can be reached through many different types of sexual activity, although women often tend to reach orgasm through clitoral, rather than vaginal, stimulation. Men tend to reach orgasm more quickly than women, just as men tend to become sexually aroused more quickly than women. On the other hand, women are more likely to have more than one or multiple orgasms during sexual activity than men are.
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