Twelve Dynamics is a Tai Chi training system developed by Capitol Sports University professor Dr. Changnian (William) Zhang. It includes twelve movements designed to provide maximum mobility in your spine to increase your flexibility and range of motion. The Twelve Dynamics system can be practiced to increase your core strength and flexibility, as well as to increase your martial arts ability.
The Chinese name for Twelve Dynamics is Twelve "Hua Fa". "Hua" means to resolve. "Fa" means to attack. The system integrates the philosophy of ancient and modern Chinese martial arts as well as other martial arts systems. Reviewing various styles of Tai Chi routines, Dr. Zhang found that a common feature among all schools of Tai Chi: both external and internal body movements follow circular trajectories, carried across three spacial dimensions. If we divide the actions of Tai Chi into different dimensions, there will be three types of movements, namely vertical, frontal, and horizontal movements. These twelve actions across three dimensions make up the Twelve Dynamics.
The Twelve Dynamics class is taught by Shifu Jonas Karosas, who studied the Twelve Dynamics system extensively under Dr. Zhang.