Abstract: This invention is an exercising device for use by archers as a practice aid and a means for strengthening the muscle groups used for drawing and holding the draw of a bow and as a warm up device preparatory for practice or shooting. The device is characterized by its compactness and substantially unitary construction. The device is a novel application of relatively slow recovery elastic type materials to provide a non snap back property to the device. The principle components for the device are; a continuous loop of slow recovery elastic belting passing through a tubular grip at one side and through a string block or rod at the other side and the string block is provided with means for attaching a bow string simulator of the user's choice.