Because it is mainly produced in Baoding, Hebei Province, it is also called Baoding Iron Ball and Baoding Fitness Ball, that is, Shouxing Iron Ball, which began in the Song Dynasty and has a history of 800 years. It is a precious tribute of Ming and Qing dynasties. This product can make a crisp and pleasant sound, which is called "male and female" ball. It is a traditional national product, antique, elegant and generous, with the functions of strengthening the body and prolonging life, suitable for all ages. It is not only a medical and health care device, but also has great ornamental and collection value. The operation method is: put a pair of iron balls in the palm of your hand and stir them with five fingers to make them rotate clockwise or counterclockwise. Playing ball games with Baoding fitness ball can strengthen the body and prolong life. Generally, two balls (three, four or even five balls for high-skilled people) are placed in the palm of your hand and moved with five fingers to make the balls rotate clockwise or counterclockwise, supplemented by arm or whole body movements. You can sit and lie down, close your eyes, adjust your breathing, practice quietly, or jump while walking. The ball moves with the fingers, the fingers move with the heart, the sound of the ball is crisp, the bones and muscles are relaxed, and the body and mind are happy. Long-term practice makes you strong.

The current Baoding iron ball is developed through improvement and innovation on the basis of following the ancient production technology of Ming and Qing Dynasties, with finer technology and more scientific structure. It has the fitness function of conditioning spirit and strengthening bones and muscles. According to the meridian theory, there are three meridians on the side of the palm. The exercise of fitness ball in hand has a good stimulating effect on these acupoints and meridians, which can dredge meridians, adjust qi and blood, restore autonomic nerve function, relieve mental fatigue and have a certain effect on prolonging life.

Cloisonne fitness ball and its manufacturing process: Its basic principle is that a layer of copper ball shell is welded on the outer surface of iron ball tire equipped with sound board, and the two halves of copper ball shell are coated with synthetic flux, and then pressed on the outer surface of iron ball tire by die pressing method, and heated in a heating furnace together with the die, so that the iron tire and copper tire are welded into a whole, and then the ball tire is shaped, pickled, drilled, twisted, blued and fired to form cloisonne fitness ball. It is a health care product integrating fitness, entertainment and appreciation.

Chinese medicine believes that this kind of exercise can harmonize qi and blood, relax muscles and tendons, strengthen the body, strengthen the brain and improve intelligence. Persist in learning often, and have a good effect on hemiplegia sequelae, cervical spondylosis, scapulohumeral periarthritis, coronary heart disease, finger dysfunction and other diseases. The reason is that there are many acupoints on the five fingers of the human body, which are the starting and ending points of several meridians, which connect the brain nerve and internal organs. Regular practitioners can produce different degrees of stimulation through these acupoints and meridians, so as to achieve the purpose of dredging meridians and harmonizing qi and blood. In addition, due to the frequent friction between the iron ball and the palm skin, static electricity and thermal effect will also play a role in promoting blood circulation and treating diseases in all parts of the body. Several common exercise methods of fitness ball are as follows:

(1) Support the friction rotation of two balls with one hand.

Put the double beads in the palm of one hand and use your fingers to force them to rotate back and forth in the palm. When rotating, keep your fingers close to the sphere so that the two balls rub against each other instead of colliding.

(2) One hand supports the centrifugal rotation of two balls.

After the above movements are skillful, the two balls gradually rotate away from each other. Finger movement and rotation direction are the same as that of friction rotation, except that the finger is straightened and the double beads are forcibly fiddled, so that the double beads rotate rapidly in the palm without collision. Its speed generally requires forward rotation 150-200 times/min and reverse rotation 130- 180 times/min.

(3) Two hands and four balls.

This is on the basis of one-handed exercise, gradually exercise your hands and do one-handed movements (two hands and two balls), which needs to give full play to the role of your brain. This action is difficult and technically demanding, but the effect is better than one-handed action.

(4) Massage, rubbing and beating uncomfortable parts with iron balls can relieve pain and exercise hand strength, which is of great benefit to the elderly who often have shoulder discomfort, backache and leg pain.

(5) Holding the ball hard with one hand or both hands, or holding the ball hard with the palm of your hand, feels sour and hot. Regular exercise like this helps to improve finger strength, wrist strength, grip strength and arm strength.