Swaying Around

We will be looking in the exact same way as the crowd behind if we spot a scene like this. A woman dressed in a frock wearing bathroom slippers in a gym? Certainly not what you see very often.
Either she has mistaken the gym to be her ballet floor and is having a rather great time, or she got bored accompanying a gym buff. Let us hope she does not slip while making those incredible moves because she isn’t really wearing the right attire. But we have to say; this looks no less than a workout too. Where can we sign up for this, again?