Easy to operate and natural to use, the Intenza 550 Series Elliptical Trainer mimics the body's natural movements, making it a great option for engaging multiple muscle groups as well as providing an effective cardio workout that benefits the core, balance and coordination. And because an elliptical combines the movements of running, and stair-climbing, without the bodily impact; this makes the ultra-smooth 550 Series a great solution for exercisers who desire a gentler workout without over exerting the joints.