We were able to purchase Heart Rate Monitor system (Polar Cardio GX) through the PEP Grant that we won. It is a pretty school concept...each student gets their own heart rate monitor (strap). There is a projected screen of what everyone is doing. This holds them accountable to actually working out. It shows if they are green, yellow or red. Can be easily emailed to parents who are concerned over their child's participation grade. Biggest problem we have faced was cleaning the straps/monitors between classes.