What to say to this gym girl?

Hello guys, I am guy who goes to the gym 4-5 times a week. I look good, fit, lean, and tall. There is a nice fit girl at my gym, and I see her sometimes looking at me, I don't know if it's just a coincidence or she really looking. I wanna hit on her, but don't really know what to say...

Any advices?

Thank you.

What to say to this gym girl?
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