Do I have any chances :(( ?

I saw a girl in the gym today and we changed eye contact some times, I think she is beatutiful but i don't know how to approach her, I thinks that if i go talk to her I may be interupting her exercises os something like that.
What should I do?
And girls how would you like to be approched by guy in the gym? Or you just don't think it's the correct place to do that?
Do I have any chances :(( ?
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