I didn’t think this would be this effective… but WOW. This stair stepper gets my heart rate up fast without killing my knees or my back. It works your legs, glutes, core, and arms at the same time — and it doesn’t take up a ton of space. Perfect if you want real cardio at home but hate high-impact workouts. Short sessions. Big burn. Especially great for women over 40. stair stepper workout low impact cardio at home women over 40 fitness compact home cardio machine full body cardio workout knee friendly exercise LTKOver40 LTKActive LTKfitnessgoals