They used to have a fat spin instructor at my Golds. He allegedly wasn't fat before and had an "injury" and spent the entire class making excuses and telling us about it. Also he wore a bandana and played some really bad 1990s or 80's heavy metal.... imagine a small fat thinking he's a rocker and still cool, and then whining about reasons he's fat. So yeah, I took the class once and never came back. Most of us were looking at each other like da fuq? And I think his class eventually got canceled. Ive seen a lot of mediocre trainers at big name gyms. To be a "trainer" you just take something like their 4 hr in house course. My friends ex boyfriend worked as one and he is a complete dipshit who is nowhere near qualified.