If you re looking to burn calories, lose weight and strengthen and tone major muscle groups, stair climbing provides astounding results. In fact, climbing stairs is widely recognized as one of the most efficient and effective cardio and strength building workouts you can do. If you re willing to put in the work, it provides the results! With the NEW StepMill 3 Designed with the StairMaster StepMill 5 in mind, the SM3 provides users with the same exceptional experience but in a more compact unit. The SM3 is the perfect œhigh reward machine for light commercial and home use.