Mineral stress balls, like the Chinese Baoding spheres, are spheres used in pairs to strengthen hand muscles, improve coordination and reduce stress. They are rotated in the palm with rhythmic and constant movements, stimulating pressure points in the hand. This promotes relaxation, rehabilitation after injuries, stress relief and concentration. They also, according to Chinese medicine, balance the flow of energy (chi) depending on the mineral. They are ideal for relaxation, physical therapy and meditation.
