Some men can experience erections without any sexual stimulation (reflexogenic erections). This is known as reflexive erection. Reflexive erections occur when there is no physical or mental...
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: The mystery behind reflexive erections: how they occur without sexual stimulation
Touching or stimulating the inner thighs is one way that couples often express their affection for each other during foreplay, but it turns out there may be more to this simple gesture than meets the...
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: Sexual arousal: how inner thigh touch can activate genital nerves