ABSTRACT
Physiological temperatures are usually above the temperature of the surroundings and thus require some immediate heat source, either internal or external. Every real process generates heat somewhere in the universe, even the cooling that occurs inside a refrigerator causes heat production outside the appliance, as required by the Second Principle. The energy of food is ultimately given up to heat, the temporary exception being that which is tied up at any given time in the orderliness associated with being alive, and that will eventually be lost to heat, too. The notion of heat "storage" by water does not imply a long-term effect. An organism eventually will lose heat to cooler surroundings and must produce or obtain more heat as compensation. Further, heat loss to the surroundings should be proportional to surface area, that is doubling the area will provide twice the area through which heat loss can occur.
