Large penises and an evolutionary theory of vaginal orgasm.

Women Who Prefer Longer Penises Are More Likely to Have Vaginal Orgasms (but Not Clitoral Orgasms): Implications for an Evolutionary Theory of Vaginal Orgasm

• Likelihood of orgasm with a longer penis was related to greater vaginal orgasm frequency but unrelated to frequencies of other sexual behaviors, including clitoral orgasm.
• Women who prefer deeper penile-vaginal stimulation are more likely to have vaginal orgasm, consistent with vaginal orgasm evolving as part of a female mate choice system favoring somewhat larger than average penises.

08/01/2014 by taj-akoben Categories: biology, penis, reproductive, sexualityTags: clitoral orgasm, Clitoral Orgasms, Evolutionary Theory, female mate choice, penile-vaginal intercourse, penis length, size does matter, size doesn't matter, size matters, vaginal orgasm, Vaginal Orgasms Leave a comment

The relative health benefits (and risks) of different sexual activities

A wide range of better psychological and physiological health indices are associated specifically with penile-vaginal intercourse.

Other sexual activities have weaker, no, or (in the cases of masturbation and anal intercourse) inverse associations with health indices.

Condom use appears to impair some benefits of penile-vaginal intercourse. Only a few of the research designs allow for causal inferences.

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08/01/2014 by taj-akoben Categories: biology, health, homophilia, immune system, penis, reproductive, sexualityTags: anal intercourse, anal sex, health indices, masturbation, oral sex, penile-vaginal intercourse, sex health benefits, sexual activities Leave a comment