I’ve been reading the book” Masters of Sex” that chronicles the life of William Masters and Virginia Johnson who revolutionized sex in the 1960’s. Previous to their studies, even doctors knew absolutely nothing about the actual physiology of sex, especially for women. If wives went to their ob/gyn with a question, they were simply given a hug and told that everything would be ok. In fact, Master’s and Johnson’s initial medical articles on sex were scorned because not even doctors dared to talk about sex.
Masters and Johnson monitored and observed over 10,000 orgasms resulting from self-stimulation or intercourse over a period of 10 years. They studied heart rates, pulse, changes in coloration, breath rates and even made a camera to observe what happens inside the vagina. It is doubtful that a study will ever be allowed again of this magnitude.