|MadSci Network: General Biology|
Scientific evidence on a relationship between pregnancy success and orgasm is difficult to collect. It is suggested however that female orgasm does assist fertilisation. The idea is that muscular contractions in the vagina, cervix and possibly uterus during orgasm help to carry sperm up through the woman's reproductive tract to the egg. However, there are many many more factors which contribute to pregnancy success that I don't believe female orgasm would play a significant role in the overall ability of a couple to become pregnant. Similarly, I doubt size of male orgasm is significantly involved in pregnancy success.
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