Gym Etiquette, Start the New Year Out Right

From yoga and Pilates to circuits and supersets, there’s no right or wrong way to get in shape. Whatever it takes to break a sweat, right? But let's not leave that sweat on the mats (or that hair in the sink). From the locker room to the cardio zone, when it comes to gym etiquette, there are a few rules that everyone should follow—fitness karma points guaranteed.