A thoracic isolation and training system is provided to stabilize radial deviation of the wrist and horizontal abduction of the humerus. As such, use of the system effectively rotates the thoracic spine so that horizontal abduction and radial deviation are locked in a proper and desirable position. The system can include one or more extension portions, one or more bracing portions, and one or more connection portions. One or more adjustment portions can be operably connected to the extension and bracing portions.