In case you were wondering,
I'm that chick in the old punk rock t shirts (with the ever present colored hair). I'm the one who seems to be expending too much energy on the cardio equipment because she is also dancing. Subsequently, I'm also the girl laughing to herself because she's listening to dance music on her headphones. And dancing to it.
You'll see me doing other things besides cardio. I'm the girl using the weight machines. My hair isn't perfect, my clothes don't show off my tight butt or my perfect abs. My clothes don't even match. (Pink velcro sneakers? Yes!)
But I'm that chick getting a better workout than you, and having a better time doing it.