Strengthen and Tone Your Entire Body Low-Impact Exercise Is Easy on the Joints Step aerobics tends to be a low-impact exercise. You can increase the intensity by adding plyometrics, which involve explosive, jumping movements. However, you don t have to do movements that will shock your joints. Most of the basic movements that are done on a step are fluid and smooth. They utilize your own body weight to strengthen your muscles. Burn Calories According to Harvard Health Publishing, a 155-pound person burns about 260 calories in 30 minutes doing low-impact step aerobics and 372 calories in the same time frame performing the activity with more intensity. You might burn more calories on a portable aerobic stepper than a stair step machine because you re responsible for creating all of the momentum. Improve Cardiovascular Fitness Even though you may not jump around when you use aerobic steppers, your heart rate should increase while you exercise.Goshen Health explains that when you boost your heart rate, you increase the amount of oxygen in your blood. This nourishes your major organs, such as your heart and lungs. Cardiovascular exercise optimizes the way that your body functions. It can also improve immunity, reduce your risk of type 2 diabetes and lower your blood pressure. Adjustable to 2 height level(10cm,15cm) Surface : Wide Non-Slip Step Surface Product Size: 66.5(L) x 27(W) x 15(H) cm Height Adjustment: 10 & 15 cm Risers: Height Increases by 5cm with each Riser. Maximum weight Supported: 250kg What s in the box: 1 x Aerobic step board with risers Product Weight: 2.545kg Packaging Weight: 2.835kg Packaging Dimension:(69 x 29.7 x 11)cm