Work it out

What is the deal with girls wearing make up in the gym?
It's something I'm noticing more and more and I can't figure it out.
Is the gym a pick up place?
I'm always purple in the face by the time I finish exercising.
As you can imagine it's not very attractive, so I'd never think of trying to impress someone in the gym.
I do remember reading once that supermarkets were a great place to meet guys.
Has that venue changed to the gym for the noughties?
Mind you I think there's a far better chance of catching a man's eye in the weights room.
I never see that many guys checking out the special offers in Tesco's.