Apr. 22nd, 2018/
Model: Gerda Y/
In the initial phase of Masters and Johnson's studies, from 1957 until 1965, they recorded some of the first laboratory data on the anatomy and physiology of human sexual response based on direct observation of 382 women and 312 men in what they conservatively estimated to be "10,000 complete cycles of sexual response".
Scholars state "many couples are locked into the idea that orgasms should be achieved only through intercourse (vaginal sex) and that even the word foreplay suggests that any other form of sexual stimulation is merely preparation for the 'main event...
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