Thanks, yes it is a fascinating discipline that I have even done medical and scientific research on. The ramifications are profound and I have both experienced it firsthand and seen it work wonders for peoples health and wellness.
Personally I have not been sick a day (except a food poisoning and a massive wall reached via jet lag traveling from Us to Europe, to Us to Asia, to Us and then Europe and back in a month... man that hit me), in all the years I have practiced it (daily for me), I attribute it to this great exercise.
RE: Ba Duan Jin - Qigong