In China you can see many older Chinese man who train with baodings balls.
Why only men train with baoding balls?
Curiously I have never seen any woman train with baoding balls.
I think that it is a show of manhood. China is still a matcho society...
Let me explain:
- At the origin, Baoding balls or iron balls date back from the Qing dynasty from Baoding a city in Hebei Province. They are used to fight and protect yourself. It is a kind of kun fu. Mostly men and no woman learn kun fu and fight.
- Baoding balls are also used in Chinese medecine. Chinese medecine is mainly practiced by men.
- Also women using baoding balls would be seen as indecent in ancient China! In imperial China, women don't often go out on the street.
But it might simply be that baoding balls are too heavy or too large for women hands?
I recommand this great wikipedia article.
Baoding balls are rotated repetitively in the hand to improve manual dexterity and strength, and they are also said to assist in injury recovery.