Abstract: Training devices, methods of using training devices and systems involving training devices are described. Training devices may include an attachment unit which includes a swivel, a plurality of support members, a first member and a second member. A training device may be configured to a first device, the first device may be moved with the training device configured to it in a desired motion and in as many repetitions as desired, and the training device may be removed from the first device. Training devices may be used in conjunction with hand units, strap units and other devices and/or appendages.