I can't say for sure if this is true, but i had read about how Jimmy Page of Led Zeppelin practiced a ritualistic type of sex called sex magick. This was based on the teachings of aliester crowley, an infamous satanist. Page was not into satanism, but was intrigued by crowley's life, and the supernatural. Anyway, this kind of sex would involve hours of non ejaculating sex, and supposedly after doing this awhile the body would reach heights of incredible pleasure, ie. orgasmic state. Just an interesting angle, i think, and wish i could do it.
by the way, #42781, you sure are a little closed minded. The energy thing is a cultural(eastern) way of looking at the body, and there's only, well a few thousand years of knowledge and research there.