Tai Chi is great exercise and has sustaining relaxation and healing benefits. Often described as meditation in motion, Tai Chi is an ancient Chinese exercise “art” form. Three philosophies are blended together in Tai Chi; the philosophy of Yin and Yang, aspects of Chinese Martial Arts, and many elements of Traditional Chinese Medicine.

“The symbol for Tai Chi is a circle divided by a flowing line that represents the movement of a wave. Filling the circumference of the circle are two curved shapes of equal size, one white, representing yin, and one black, represent yang. There is a small dot of the opposite Cole in each shape, showing the sympathetic character of each to the other. The dynamic flow with the symbol represents the movement and the continuity of the life force.”
Source:
The Illustrated Encyclopedia of Body-Mind Disciplines by Nancy Allison