A contemporary cross-discipline system of exercise developed by Paul Grilley as a result of his studies with Paulie Zink, and application of Taoist analysis to the practice of Hatha Yoga.
In Pauls' own words: "A Taoist analysis of Yoga practice emphasizes the critical difference between Yin and Yang tissues of the body. Muscles and blood are Yang, connective tissues and joints are Yin. Yin and Yang tissues do not respond to training in the same way and a student’s practice becomes more effective when the difference is understood."
The practice consists of postures selected to gently stretch and release the connective tissues around major joints, and put slight pressure on the joints themselves. According to Paul, and contrary to the current prevailing medical view, slight pressure on the joints is highly beneficial to mobility and overall health.
Postures are performed with muscles held as relaxed as possible (body weight is used for leverage as needed), and are held anywhere from 2 min (beginners) to 10 min (more advanced practitioners).
Modern research, especially by Dr Hiroshi Motoyama of Japan, indicates that the connective tissues are in fact the Meridian pathways of the body. Consistent practice of the Yin postures will maintain and improve the free flow of qi in these pathways.