taiji (551) taijiquan (314) baguazhang (26) xingyi (21) chen tai chi (14) hsing-i (14) xingyiquan (13) chen taiji (7) hsingichuan (2) pakua chang (2)
The NEW book from Ken Gullette
"Internal Body Mechanics for Tai Chi, Bagua and Xingyi"
Detailed information about the six key internal body mechanics.