When the sun rises each morning in the public parks of China, animals and insects are not the only beings that can be seen moving about. Across the country, elderly men and women fill the grounds, often seen performing slow, graceful movements. These ballet-like series of movements are actually the ancient regimen of Tai Chi Chuan (also known as Tai Chi). Over the centuries, Tai Chi has evolved from a combative martial art into a widely practiced and highly effective exercise that builds balance and overall health. Accurately described as "moving meditation," Tai Chi coordinates movement with breathing and relaxation of various parts of the body. The word Tai Chi was first used in I-Ching, The Book of Changes, published in the Zhou Dynasty (1100-770 BC), to mean "supreme ultimate," representing the harmonization of natural forces (yin/yang). Chuan means "cultivating the hands." Together, the name means an exercise that emphasizes the balance of yin and yang, external and internal. It is thus accessible to people of all ages, both gentle for the elderly and challenging for the young. According to a recent survey conducted by the Sporting Goods Manufacturing Association, Tai Chi participation increased a total of 12.2% from 1998-99, making it the fastest growing physical activity in America!