When practicing the routines of Wu-style Tai Chi, the opening of each form is exhalation, and it combines the ancient "heel inhalation method", using the six characters "he", "xi", "hu", "呬", "chui", and "xu" to respectively treat diseases of various parts such as the heart, liver, spleen, lungs, kidneys, and gallbladder. When a certain part of the body is not healthy or you want to exercise a certain part, when practicing the routine exhalation, gently recite the corresponding word. The voice should be very low, so that you can hear it but others cannot. Long-term practice can achieve good effects in preventing and treating diseases. Those who are healthy use the character "he" to strengthen their hearts. According to traditional Chinese medicine, the heart is the ruler; when the heart is healthy, the body is healthy. Hexin xi liver calls spleen 呬 lung blows kidney shushes gallbladder note: This was dictated by the ancient master. One of the characteristics of Wu-style Tai Chi is the combination of exhalation and the ancient "heel inhalation method". From "Health Preservation Network