Precision Ball-Bearing Ride For Smooth, Fluid Motion, High-Impact, Rotating Platform Provides A Vigorous Form Of Aerobic Exercise. Become Simply Fit And Slim Your Shape The Way You Want With Simple And Effective Twists While Inspiring Others To Do The Same. Twist Your Way To Slimmer Abs, Hips, And Thighs. Stimulates Blood Circulation And Massage Your Feet At Same Time. Effectively Burns Calories And Combines The Benefits Of Aerobic Exercise With Reflexology. The Magnetic Wave Disc Will Massage And Stimulate Meridian Points On The Bottom Of The Feet And Help Promote Good Health. 8 Magnets Help Improve Your Blood Circulation And Reduces Muscular Aches And Pains.