Exercise Balls - Large

Famed as one of the "three treasures" of Boading China. Created in 1368 during the Ming Dynasty. Method: Place both Iron Balls in the palm of one hand and rotate the balls in a circular motion using all five fingers. This exercise improves the circulation of vital energy and blood to the body. Helps relieve tension, reduces stress, and calms nerves. Helps with carpal tunnel, tendinitis and arthritis. Used in martial arts and meditation