I began my martial arts training in 1967. My first style was Tang Soo Do, a Korean version of Karate. Three years later I started Tiger-Crane Kung Fu. Then in 1974 I began studying T'ai Chi Ch'uan. One of the concepts that really caught my attention in Tai Chi was how to create energy releasing power. In all the books I read and in all my study, I could never quite grasp how to do that. Then in 1986, I had a big insight: "It's a slingshot". A slingshot has two components, a handle and a set of rubber bands. When you draw back on a slingshot, you create potential energy. When you let go, that potential energy changes to kinetic energy and now it does work for you, it shoots the pebble. I realized that our body has the same two components, the skeletal structure and the muscles, tendons and ligaments.