There's no escaping that awkward shift that happens at least once a month. Someone is bound to chat a girl up and get publicly rejected, that guy who goes commando will rip his shorts when squatting and everything will hang loose, and there's always one person who can't control their bodily functions in yoga during the downward dog. Some classes will be deadly silent that you're worried that everyone in participating in the class has either forgotten how to talk or you've become invisible. Then on the other hand, you have the grunters who pretend that lifting weights is the vocal equivalent of being a porn star. Or Madonna will turn up and start thrusting on the floor...