The Zenergy workout is specifically designed to strengthen the body, the heart, and the mind while burning maximum calories. Light hand weights are used to engage the upper body while movement in and out of the saddle works your core and lower body. Each class is accompanied by a unique, energetic playlist handpicked and designed by the instructor. . Zenergy’s philosophy is simple; for you to forget about how hard you’re working and instead, clip into the bike and out of the rest of the world.