A review of scientific literature suggests that there is strong evidence of beneficial health effects of tai chi and qi gong, including for bone health, cardiopulmonary fitness, balance, and quality of life. Both tai chi and qi gong (also known as qigong) have origins in China and involve physical movement, mental focus, and deep breathing. Because of the apparent similarities between tai chi and qi gong, the researchers reviewed the literature on both practices together. The review was published in the American Journal of Health Promotion.
NCCAM