For low impact rehabilitation and exercise . Shows exercise time duration, calories consumed, cycles and revolutions per minute. Adjustable pedal resistance (instructions are within product description). Helps improve overall fitness. Pedals have toe straps, adjustable to your needs. Please take care to thread the tension screw correctly when setting up this product, as if the screw is cross threaded it may be damaged so the product will not work. The tension screw needs to be turned several times to engage properly with the tension. Note-This product is not an alternative to gym equipment.