An apparatus including a transverse housing having a length sized to fit between the shoulder blades of a human; and a descending shaft coupled to and bisecting the transverse housing, the descending shaft including a length suitable to extend from the transverse housing to a shaft of a golf club when a human assumes an addressing stance and the transverse housing is engaged the biceps of the human; and a distal end having a dimension suitable to fit within a bleeder hole of a golf club grip. A method including coupling a training device to a shaft of a putter through the bleeder hole, the training device including a transverse housing and a descending shaft coupled to and bisecting the transverse housing; and engaging the transverse housing of the training device between the shoulder blades.