The CT9500 HR combines the cardiovascular/muscular benefits of running and the low impact of walking. The Lifefitness 9500HR is one of Lifefitness's best selling machines, with 27 programs to choose from. This crosstrainer features the Life Fitness exclusive Lifepulse digital heart rate monitoring system, the most accurate way to calculate individual heartbeats. This total body trainer combines the cardiovascular benefits of running and the low impact of walking. User can exercise large groups of upper and lower body muscles simultaneously. User can alternate between forward and backward motions for total body results.