I got myself some Baoding Balls the other day and I am really feeling the benefit. vid After a week, my hands are loosening up a lot and getting stronger. Also, it is quite good fun to do, like a meditation it requires a certain calmness of mind and it tickles the pressure points on your hand as the balls move around. I got them from a Chinese Doctor, who said to just play with them at first, no more than one hour per day and to learn something each time you pick them up. It is more of a workout than I thought and you could overdo it... Has anyone got any experience? How good are they for bass playing? Any potential problems with their use?