Now I think about it, I have heard the word "gym bunny". I guess it means someone who goes to the gym a lot.
Gym member? Though I suppose membership doesn't necessarily involve working out.
Where did you hear gym rat?!
What's the best word to refer to somebody who works out at the gym? A gym goer? A gym rat? A bodybuilder?
Oh, these are real people all right. I see them every other day. They are really quite nice.
In the mean time I'll try to figure out what a "real person" looks like. A fat slob who doesn't care about his or her appearance? Heaven forbid!
Almost everyone among us has heard the phrase "playboy bunny". It doesn't take much intelligence to extend that concept.