Here is a fitness machine designed to give you a fun core workout. The Rodeo Pro Core Trainer (USJ-1010) engages your thigh, back, and core muscles without any impact or stress on your body. It has variable tilt and speed settings. It can handle users up to 220lbs.
Rodeo Pro moves users off their center of balance to force them to engage their core muscles to rebalance. Each session lasts 15 minutes.