Principles of Yin and Yang
The mutual consuming of Yin and Yang.
In nature: A blazing fire (Yang) consumes its fuel (Yin) quickly. If one throws too much wood on the flames, the flames will be smothered. In human beings: Yang is consumed by producing Yin. Yin is consumed by nourishing the Yang. If too much Heat is present in the body, it will burn the Body Fluids and signs of Dryness will appear. In the same manner, an excess of Heat can weaken the Body Fluids, so that these can no longer nourish Yang. Burnout-Syndrome originates frequently on the basis of this principle. In other words, if you work with an overly excessive flame over the years, the fuel will be consumed and the flame will die.