The Curves workout is a complete workout including all five necessary components: Warm-up, Aerobic exercise, Strength training, Cool down & Stretching Curves uses hydraulic resistance; there are no weight stacks to manage or change. Also features Curves-Smart - a state-of-the-art personal coaching systems that has been incorporated into our 30-minutes circuit workout. Now every piece of equipment in our circuit is programmed with your body's information to give you moment-by-moment feedback. The Curves circuit with Zumba has arrived! It's the only 30-minute class that mixes the music and moves of Zumba with the proven strength training of Curves, for a wildly effective workout.