This therapy is durable and effective to refresh you,grab this pain relief product today that really works. using the acu-balls as a general tonic to improve health use the acu-ball as a general therapeutic aid to generally stimulate nerve reflex points on the hands and feet at random . Through stimulating each of the reflex points, we are working on each of our internal bodily organs therapeutically, removing any acupuncture meridian blockages which thereby allows chi energy, or life force to freely flow through our body, and consequently support good health. Support blood circulation in the hands and feet. The acu-balls contain magnets to aid in improving blood circulation while they are being used.