Stepping A Safer Way To Get Your Heart Pumping Compare Step aerobics to other exercises like running, notice that stepping is easier on ankles + knees. But why should you exercise to a breath robbing point of exhaustion to get that heart pumping? See why and do as they do in this fun movie... in Public bookmarkswith aerobic_exercisestep_aerobicsstep_aerobics_movie Note: Compare Step aerobics to other exercises like running, notice that stepping is easier on ankles + knees. But why should you exercise to a breath robbing point of exhaustion to get that heart pumping? See why and do as they do in this fun movie...