Myzone is a workout system that combines the joys of sweating your bits off with modern technology, to ensure that you are correctly sweating the right bits off with the right amount of effort. No matter if you are seasoned sports pro or it the first time you have put on a pair of trainers, Myzone helps you feel confident in your exercise. The focus of the Myzone system is ensuring that you are in the right heart rate zone by using the Myzone MZ-3 chest strap to measure you heart rate (equiv.