This excessive amount of fuel
taken into the system in the form of food, wears out the body. As
figured by the experts, it gives a result of food need that is at least
twice as great as necessary. Experience is the only correct guide to
food requirements, and each individual has to settle the matter for
himself. The human body is not exactly a chemical laboratory, nor is it
an engine which can be fed so much fuel with the resultant production of
such and such an amount of heat and energy. Some bodies are more
efficient than others. It is among human beings as among the lower
animals, some require more food than others.
We need enough food to repair the waste, to perform our work and to
furnish heat. Every muscle contraction uses up a little energy. Every
breath deprives us of heat and carries away carbon dioxide, the latter
being formed by oxidation of tissues in the body. Every minute we lose
heat by radiation from the skin. Every thought requires a small amount
of food. If we worry, the leak of nervous energy is tremendous, but at
the same time we put ourselves in position where we are unable to
replenish our stock, for worry ruins digestion.
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