This is extremely difficult. The gym has two problems. 1) Girls don't want to be bothered 2) You don't know if she's there with a boyfriend or has a boyfriend or other variables.
Other variable obstacles include iPods, Muscular Personal Trainers, and the attention wh0re shield (Toe touchers, stretching, treadmill juggies bouncing, anyone?) There's even a show about this sh*t in Fit TV, I think!
A lot of guys have mastered the gym scene. But for me, I always got the girls outside of the gym, that I have seen at the gym. Catch my drift? If I see a girl out, I say "Hey, you go to my gym up at ______ right? I see you all the time, what's your name?"
The musclemen did. Extra points if they got a handsome face to go with it. Triple word score if this guy is seen getting in a Benz! But getting these girls outside the gym, that's a damn good idea!
But as far as in the gym, try to smile and say hi. Little at a time, next time, talk to her, next time work out next to her, next time ask her etc.
Slowly but surely. But slow and steady might not be enough to win this race. You still gotta get the # and set up a date. Strike while the iron's hot because she'll be back to her playlist quickly.
When you do, use alcohol because it equals sex. Add a bed, subtract the clothes, divide her legs, and multiply her hot desire!
Don't do dinner because it equals sleep, plus your hand minus 41 bucks, divided by another man, and multiplied by hurt feelings!
The one thing you don't want is the reputation of the "guy that hits on every girl at this gym".
Hell no! And who the f**k does!