Speaking of fitness, it's good to stick to it, but Tai Ji Chuan has the function of performing and fighting. If you simply nourish your body, Yijinjing is easier to learn and less likely to get hurt than Tai Ji Chuan. In addition, Yijing and Taiji Chuan have different school routines. The key depends on the purpose of exercise and personal interests. Three minutes of intense training can't do anything.