Exercise and Isometrics . Exercise with Grand Master Moon in this Ultimate Workout DVD. Discover how you can make your body strong like iron, using seven forms of Chul Sa Jang. Develop incredible strength and power. Learn five Ki Cho Ja Ki (Ki exercise). Learn seven forms of Chul Sa Jang. Develop Incredible Strength and Power. You need to have at least 12 years of training to earn the 4th degree black belt, before you are exposed to Isometrics Chul Sa Jang (Dragon, Bear, Tiger, Eagle Exercise) Isometrics Chul Sa Jang strengthens your body and mind.