During the orgasm stage, both the male and female pubococcygeal muscle and pelvic floor muscle system contract rhythmically, blood pressure rises, breathing becomes quicker and the pulse increases to reach anywhere from 110 to 180 beats per minute. This feeling is often said to be like running a 100-meter sprint.

But I don't think all the focus should be on the slightly difficult problem of orgasms, instead, in my humble opinion at least, everything is all right as long as it feels good. Sex is not about the genitals, it's all about the mind, so if you're worrying about things like pregnancy or contracting a sexually transmitted disease, the orgasm is often a trifling matter.

Well, for those couples who are interested in having an orgasm, here is "Dr. Kitamura's Seven Steps To Make a Woman Come."