They create the G-forces for the orange side by spinning, but you don't feel the spinning, you just feel the G-forces. As long as you look straight ahead (easy b/c you're looking at the video screen) and don't close your eyes, you won't feel a spinning sensation. If you don't have problems with motion sickness, try the orange side. We were a little worried the first time, too, and we rode the green side and were underwhelmed. We went back and tried the orange side and it's a good ride. Not the greatest ever, but definately worth doing one or two times a visit.