Chinese Healthy Balls can help any guitarist who suffers from aching hands. These balls are known to improve finger strength, dexterity and flexibility. Guitarists say they help alleviate some of the pain that comes from stretching to play chords, and using other muscles to compensate for applying pressure through the fingers. They come in varying sizes, and the user should be able to rotate the balls in their hands.
Read the full article here:
Happy hands and healthy balls seem to go together. Check this out.