What is this Yin Yang symbol all about? It is all about balance. The Chinese use this symbol for a lot of things, including their science and their design.
The Yin Yang symbol, comonly known as YiJing or Iching, is a symbol of balance in the Chinese context. There is white and there is black. This symbol denotes opposites of the universe, such as male and female, dark and light, up and down, heaven and hell... you get the idea. In Chinese science, everything is revolving. What goes up must come down. What is good will go bad. And in art and design, this Yijing symbol has also been extensively used. Notice RVD's wrestling singlet?
In TCM or Traditional Chinese Medicine, the Yin Yang Symbol signifies balance in time of the day and eating time. Mornings are symbolized by the white part where as night the dark part. And TCM classifies various foods as Yin or Yang - Yin being cool foods and Yang being warmer food. There must be a balance so that one can remain healthy. Imbalances can cause problems like diseases, weight gain... So a person who wants to lose weight or lose fat can try finding out whether their body is yinyang imbalanced.