Purification
Just as undigested food stagnating in the body causes impurity, similarly frustration caused by festering, unfulfilled desires, causes Ama, a poison generated in the mind that pollutes the body by diminishing its digestive capability; creating metabolic toxins.
Unless purified, these toxins accumulate, ultimately producing adverse effects on the entire system. The aim of purification is to get rid of Ama so one is able to assimilate nourishment and applied alchemy.
By purifying and nurturing the organ of consciousness (the brain-mind), the organs of knowledge (the senses) and the organs of action (physical organs) therapy brings cellular growth and decay into equilibrium and harmony to attain optimum metabolic balance - excellent health.