In order to just exercise, prevent the deterioration of chronic diseases and improve the body's immunity, we can learn to simplify the twenty-four forms, or learn from Yang's Tai Ji Chuan. Chen Tai Ji Chuan also has a routine in this respect, which is the essence of the Eighteen Styles (also called body-building exercises), but it depends on the patient's physical condition. The reason is that Chen Tai Ji Chuan has higher requirements for legs than the simplified 24-style and Yang Tai Tai Ji Chuan. Therefore, the first two are more suitable for people who have recovered from serious illness, inconvenient legs and feet, and poor physical resistance, while the latter is more suitable for health preservation.