Bring heart rate-based training to your group classes with Polar Cardio GX. This system gives instructors the tools to deliver personalized feedback to an entire class at once. During a Cardio GX group class, every members’ heart rate is displayed on a big screen - meaning they can see how much they’re pushing themselves in real time. What are the benefits? One instructor is able to give a whole class a tailored workout in an exhilarating environment, keeping them motivated and loyal to your club.