Only twice did I get hit on at the gym and both times I was not too kind. One guy asked for my # and I gave him the wrong #. Hoping he would get the hint!
For me, the gym is my quiet place. I socialize all day at work so I don't want some numbskull ruining my mojo while I work out. The MP# is a great deterrent ;-)
But maybe some chicks like it….I personally would not want to be a situation where if the “date” does not go well, you will need to see this person at your “zen” place.