Starting in at least 2007, the term, "coregasm" was used in popular media to refer to exercise-induced orgasm or in academic parlance termed exercise-induced sexual pleasure or EISP, and an extensive discussion of the "yogasm" occurred in a 2011 Daily Beast posting. A paper published in 2012 presented results of an online survey of women who had experienced an orgasm or other sexual pleasure during exercise. The paper was widely discussed in popular media when it was published. The authors of the paper said that research on the relationship between exercise and sexual response was still lacking. Anal and prostate stimulation
In both sexes, pleasure can be derived from the nerve endings around the anus and the anus itself, such as during anal sex. It is possible for men to achieve orgasms through prostate stimulation alone. The prostate is the male homologue (variation) to the Skenes glands (which are believed to be connected to the female G-spot), and can be sexually stimulated through anal sex, perineum massage or via a vibrator. Much of the available information about prostate-induced orgasms comes from anecdotal reports by individuals, and the exact mechanisms by which such orgasms are produced are unclear; some sources suggest this occurs via stimulation of nerves in the prostatic plexus surrounding the organ, others suggest it is via nerves within the prostate itself, and others say changes in the brain (neuroplasticity) are required to derive pleasure from prostate stimulation. Regardless, prostate-induced orgasms are often reported to be intensely pleasurable.
Multiple orgasms are more commonly reported in very young men than in older men. In younger men, the refractory period may only last a few minutes, but last more than an hour in older men.An increased infusion of the hormone oxytocin during ejaculation is believed to be chiefly responsible for the refractory period, and the amount by which oxytocin is increased may affect the length of each refractory period. A scientific study to successfully document natural, fully ejaculatory, multiple orgasms in an adult man was conducted at Rutgers University in 1995. During the study, six fully ejaculatory orgasms were experienced in 36 minutes, with no apparent refractory period. Females
Orgasmic factors and variabilities
In women, the most common way to achieve orgasm is by direct sexual stimulation of the clitoris (meaning consistent manual, oral, or other concentrated friction against the external parts of the clitoris). General statistics indicate that 70–80% of women require direct clitoral stimulation to achieve orgasm, although indirect clitoral stimulation (for example, via vaginal penetration) may also be sufficient. The Mayo Clinic stated, "Orgasms vary in intensity, and women vary in the frequency of their orgasms and the amount of stimulation necessary to trigger an orgasm." Clitoral orgasms are easier to achieve because the glans of the clitoris, or clitoris as a whole, has more than 8,000 sensory nerve endings, which is as many (or more in some cases) nerve endings as are present in the human penis or glans penis.