HI! I think that all of my stories feature very "fit" and muscular women, but I have written two stories that take place in fitness clubs. Here are links to both, on Rival's website.

The first is a rewrite of "Club Wars." The second is "Fitness Rivals." The third is not quite on target but it does take place in a fitness club too - it's "The Silent Partner."

JB

Club Wars by JB57 – Fights.Sexy

Fitness Club Rivals by JB57 – Fights.Sexy

The Silent Partner by JB57 – Fights.Sexy