In the early 2000s came to FBBs from sessioning with dominas. My taste in Mistresses back then was moving more and more to Amazonian types (over 6 ft. in heels and I'm over 6 ft.), busty and curvy. When I discovered, by accident, Mass Muscle and the wb270.com sites, I knew I found my place for my type of roleplay.
Since then I've seen more bodybuilders go the domination route in their ads and, for me, it makes perfect sense.