Position therapy balls on each side of a muscle, for fast relief from muscle aches and an invigorating massage. Squeeze the handles closer together, applying the desired amount of pressure. Change the placement of the therapy balls on the Acu-Massuer to fine-tune your therapeutic massage. Three positions are available for each ball. Use the cord to extend your reach, especially for the shoulder area. One pressure relieving ball can be used for tap therapy by gently tapping the ball on the sore muscle for pain relief.