http://www.americantaichi.net/TaiChiQigongForHealthArticle.asp?cID=2&sID=10&article=chi_201811_2&subject=Mental%20Health Heart rate variability (HRV) as an accurate, noninvasive measure of the Autonomous Nervous System (ANS) can reflect mental health (e.g., stress, depression, or anxiety). Tai Chi and Yoga, as the most widely practiced mind-body exercises, have shown positive outcomes of mental health. To date, no systematic review regarding the long-lasting effects of Tai Chi and Yoga on HRV parameters and perceived stress has been conducted. In a study recently published by Journal of clinical medicine, researchers from China, Brazil and the United States collaborated in a research project
http://www.americantaichi.net/TaiChiQigongFitnessArticle.asp?cID=2&sID=8&article=chi_201811_3&subject=Fitness The U.S. Department of Health and Human Services released the new Physical Activity Guidelines for Americans, which updated the previous guidance the department had published back in 2008. The new guidelines provide evidence-based guidance to help Americans maintain or improve their health through physical activity. The Guidelines make these recommendations about Tai Chi: "Tai chi is typically classified as a light-intensity physical activity but may be considered relatively moderate intensity for some adults. It includes balance activities, and some forms may be considered muscle st