The black and white halves of the Yin-Yang symbol are similar to the two sides of a coin. They are different, and distinct, yet one could not exist without the other. The circle itself - which contains these two halves - is like the metal of the coin. It is what the two sides have in common - what makes them "the same."
Yin Yang personality types, signs of excess, foods and activities to correct the excess, plus interactive test to help determine your type. Based on Chinese traditional medicine and Korean Sasang (four body types) medicine.
In Chinese philosophy, the concept of yin-yang, which is often called "yin and yang", is used to describe how seemingly opposite or contrary forces are interconnected and interdependent in the natural world; and, how they give rise to each other as they interrelate to one another. Many natural dualities(such as male and female, light and dark, high and low, hot and cold, life& death, and so on) are thought of as physical manifestations of the yin-yang concept.