Ball training can be either completely silly or a little treasure house of information. Mostly it depends on what you bring to it. We have a number of ball training disks especially in the Tai Chi field (being a ball, it would also work for Bagua practitioners). This one is probably the simplest and most straight forward without being mawkish. For the price of a VCD you can learn enough exercises and angles of execution to get started. The particular style this VCD is associated with is Chen, but at this level all Tai Chi is one. Speaking as a teacher, I can see nothing but benefits to Tai Chi ball training as long as it is practiced with a bit of originality and a sense of exploration. The cheapest piece of training equipment on the planet?