How would you experience optimal efficiency of your healing system? Very likely you would not be aware of it, because we tend to pay little attention to our health when it is good. You would recover speedily from illness and heal from injuries uneventfully. Ordinary stresses of everyday life might annoy you but would not derange your digestion or blood pressure. Sleep would be restful, sex enjoyable. Aging of your body would occur gradually, allowing you to moderate your activity appropriately and live out a normal life span without undue discomfort. You would not contract heart disease or cancer in middle age, be crippled by arthritis in later life, or lose your mind to premature senility.
This scenario is realistic and, I think, worth working for. Actually, the body wants to be healthy, because health represents efficient operation of all of its systems. A useful analogy is the engine of a far. When all components are doing what they should be doing in just the right way, efficiency is maximal, and operation is quiet, producing a "contented" purr that you rarely notice. An engine that calls attention to itself by sounding noisy and rough, hocking, and expelling black smoke is not efficient. Since efficiency is the ratio of work done to energy supplied, the sick engine is working harder to accomplish less. In a similar way it takes less energy to be a healthy person than to be a sick one, and just as a driver may not pay attention to the sound of a well-running engine, people may not be aware of the condition of good health until it breaks down. A program to boost the efficiency of the healing system will not necessarily produce immediately noticeable changes. It is a long-term investment in the future of the body. (Andrew Weil, M.D., ‘Spontaneous Healing’)