Adjustable Core Resistance Springs: Tucked beneath the frame are high-tension springs that provide customizable resistance during sit-ups and crunches. They assist you on the way up and offer resistance on the way down to maximize muscle isolation. [1]Integrated Pedal Cycle Unit: Located at the front base, this attached foot pedal setup allows you to combine your abdominal workouts with low-impact cardiovascular training for lower limb strengthening and calf/thigh toning. [1] ( ( )360-Degree Rotating Swivel Seat: The central pad,These provide cervical and spinal support during motion, cushioning your back and neck to minimize strain