Approaching women in the gym.. good or bad?

[John]

I thought it was bad always, because they're doing their own thing and want to be left alone. Then I asked my female friend and she said she'd love it if a guy did it to her because she feels like a dog in the gym. I only want to do it so I can become familiar with meeting girls and talking to them, I'm only 19 and don't have much experience at all in that area. I think a little confidence would be good and I've seen some lovely looking girls at my gym.