Dr. Cohen's Acuball MiniThe acuBalls patented design features apply 100% natural acupressure and heat: relaxes tight muscles, enhances joint movement, reduces nervous system irritation, stimulates blood flow to flush out built up muscle wastes, releases natural painkillers and sedatives, improves nervous system energetic flow. The Acuball minis smaller nibs and harder feel make it perfect for releasing tight muscles in the smaller muscle groups of the body such as the feet,