Lake Success, NY — Polar launched its Cardio GX system, designed to enhance the group exercise experience between instructors and participants. Cardio GX displays individual heart rate data onscreen, motivating members to exercise at the right intensity and get the most out of their workouts. The display also eliminates guesswork — participants can see accurate, real-time information about their performance levels, rather than using perspiration or breath control to judge exertion. In turn, instructors have more tools to personalize and direct the flow of their classes.