What is the internal structure of Baoding fitness iron ball?

Baoding iron ball: a traditional fitness product, listed as the first of Baoding's three treasures. Baoding iron ball, now called fitness ball, is not only an entertainment tool, but also a fitness function. The appearance of the ball is bright and shiny, and the internal structure is complex. There is a ball in the ball, and they are a pair, commonly known as "a man and a woman". When you hold it in your hand, the sound is different, high and low, crisp and pleasant, which can not only adjust your muscles and mind, but also cultivate your temperament in the sweet voice of the iron ball.

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.

Now there is an iron ball with concave and convex points on its surface, and there is a magnet inside. The two balls attract each other, increasing the rotation of the iron ball. Magnets can promote blood circulation and are suitable for people with high ball skills.

As for the internal structure and manufacturing method, this is a confidential process, and no one can tell you.