The versatile AquaForce™ system, exclusive to PDC Spas®, offers a range of exercises to target upper body and core muscle groups. Customizing your workout with beginner, intermediate and advanced moves is quick and easy. Simply face forward or backward using the AquaForce™ ropes above or under the water to add resistance and intensify your training. Add or adjust the swim current for a more vigorous workout from your deltoids to your calves.