I have no idea, but i always have to go pee before sex and then i still end up having to pee after sex too.lol I've never had a yeast infection or UTI so maybe it does help :)
For a woman, it is best to go pee after sex. It DOES help prevent yeast infections and UTI's. That may not be true for 100% of all women, but a good majority of them. So my advice to all women, better to go then have infections.
I even asked my gyno how true that info was and he DID agree with me. So... to each his own.
Before lovemaking (sex), we don't think about having to use the toilet, it's either you feel like it or not. Usually, after sex, the act itself or body weight puts pressure against the bladder.....wish I had a better answer....Judy
not all people pee after sex. sometimes its because a women may feel like she has to pee during sex because of the force. sometimes people just feel they have to pee..i think they say if you pee after sex you wont get a uti...idk how true that is though