1, Finger Flexibility: Holding and turning the crystal ball helps to enhance the flexibility and agility of finger joints. This is very beneficial for activities that require fine finger movements, such as typing, playing musical instruments, handicrafts and so on.

2. Finger strength: By exerting a certain degree of pressure and resistance on the crystal ball, the muscle strength of finger joints, palms and forearms can be enhanced. This helps to improve the grip strength and grasping ability of fingers.

3. Blood circulation: Holding a crystal ball can promote blood circulation in the hands, increase blood flow and oxygen supply, and help relieve hand fatigue and stiffness.

4. Relaxation massage: The surface of the crystal ball is smooth and flat, which can be used to gently massage the muscles and acupoints of the hand to help the hand relax and relieve the tension and discomfort of the hand.