Functions of Yin and Yang
Yang functions
To warm: | Yang must be able to warm the body adequately, so that Yin does not cool the body too much. Every transformation involves the Yang function of warming the body. E.g.: The Yang of the Kidney provides the required Heat for the entire metabolism.
To transform: | This function of Yang is necessary for every transformation on the physical or mental level. E.g.: The Yang of the Spleen extracts the Food Qi (Gu-Qi) from the food. The Yang of the Spleen also "digests" daily impressions and experiences. The Qi (Yang) of the Lungs uses the Food Qi to produce Defense-Wei Qi and the Nutritive-Ying Qi.
To move: | Yang gives us the ability to move the body. The Yang's function of moving is the driving force for each movement in the universe. E.g.: Yang moves Yin. Qi moves Blood. Without Yang, the body would be a lethargic mass (Yin). The Yang (Qi) of the Liver moves the Qi into all directions. The Yang of the Spleen moves the Food Qi (Gu-Qi) to the Lungs.
To protect: | E.g.: The Defense-Wei Qi protects the organism against the penetration of pathogenic factors.
To hold: | E.g.: The Yang of the Bladder holds the urine. The Yang of the Spleen holds the organs in place.
If Yang is weak, the Yang functions can not be maintained. As a result, Yin dominates in the body.

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