Good lord. Always have to be some people all up in other people's shit. Let the poor girl teach. No, she may not be a shining example of where Jazzercise can take your physique, but at the very least she'll be a more welcoming soul towards the overweight people who want to get started. That and she can apparently hang with the skinny fitness chicks when it comes to the exercises performed. No, she may not be the person you want handing out diet advice, but I'd like to see some of the other 240lb overweight people on this board try to hang with her through one of her classes.
I like seeing skinny and fat people in the gym. I was a rail when I first went in a couple years ago, and it was a constant insult for me to look around at all the other guys in there and then see myself in the mirror with my little twigs poking out of my t-shirt. To see other skinny guys in there was comforting. If everyone there had a jacked up 200+lb physique, you can bet your ass it would've been 10x harder for me to keep going in 4-5 times a week. But gradually I progressed and soon I was looking at other guys in the mirror, and then looking back at myself and feeling good about myself. You get motivation from seeing the big guys, and you get an ego boost from seeing the people you once were. Let this woman teach and be a big 240lb welcome sign to the overweight instead of consistently having the instructor be a 110lb ripped girl who the overweight will always be looking at as "the impossible goal."