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The theory of Chinese medicine revolves around the philosophical concept of Yin and Yang. Yin and Yang is a long held Chinese idea of living in harmony with nature and having opposing balance, even going so far as to correspond with the four seasons and the 24 hour cycle of 4 time zones throughout the day – sunrise, noon, sunset, and evening. Everything in the universe is divided into two parts, the Yin and Yang: darkness versus light, feminine versus masculine, rest versus activity, north versus south, and right versus left, cold versus hot.
However, when it comes to Chinese medicine specifically, in terms of physiological functions, Yin and Yang can be split into form versus energy, contraction versus expansion, below versus above, and growing versus generating. This definition of Yin and Yang is very important in Chinese medicine, because it can help a skilled practitioner determine where an imbalance of chi – or, a persons life force - is, and how such an imbalance of chi can be fixed. For example, Chinese medicine teaches that Yin places of the body consist of the front of the body as well as the inner and solid organs like the liver and kidney, while Yang places of the body consist of the back of the body as well as the exterior and hollow organs like the stomach or intestine. If one were to have stomach cramps, for example, that would be an imbalance of Yang – thus, Chinese medicine dictates that it can be balanced out by treatment of giving a person more Yin by making a traditional herbal prescription. In a more simplified example of Chinese medicine at work, if a person is cold – a Yin sign – then such an ailment can be cured with heat – a Yang sign. However, because there are so many aspects of Yin and Yang in Chinese medicine, it takes a professional to help determine how to keep ones body balanced properly if there is an imbalance within.





