I Chin Ching or Yijin jing roughly translates to "muscle/tendon change classic" or the "change of tendon and muscle." The idea is that by tensing your muscles through static holds/stretches and dynamic motions you can build stronger, more flexible muscles and tendons, while achieving better balance and coordination. That's a lot of promise for just 49 exercises! There are many legends on I Chin Ching and how it came to be. Some of the legends...