In its introduction to the market place a number of years ago, the Cybex Arc Trainer was touted industry wide as one the most innovative cardiovascular machines ever built! To this very day, it is STILL regarded as such. The ease in using this machine, along with its incredible patented ‘Advanced Stride Technology’ which allows you to alter your stride length, and trajectory or shape in ways that engage significantly more muscle groups overall than any other cardio machine can do. This model also INCLUDES the Upper Body Arm Motion to create the ULTIMATE FULL BODY WORKOUT MACHINE! Used in Gyms and Health Clubs the world over now, this model will give you one of the very best cardiovascular workouts possible, along with NO JOINT IMPACT.