I found myself reading this article today because apparently exercising the kegel muscle regularly can considerably increase the intensity of orgasms. I, erm... ahem, read about that whilst trolling through Google News articles... but hey, who doesn't want better orgasms, right?
Anyway what you're supposed to do initially is to find the kegel muscle so you can isolate it for the exercise routine. You do this by peeing, then, whilst attempting to keep your buttocks and upper leg muscles relaxed, reduce the flow of wee, if you successfully manage to do that, you've found the kegel muscle.
I tried this and ended up peeing all over the toilet seat and floor.