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Although tea is not a substitute for food, it appears so for a considerable period of time, as its stimulating effect is immediate. It is certain that less food is required where much tea is taken, for by its use there is less wear of the tissues, consequently need of repair. When taken to excess, it so acts on the nervous system as to produce sleeplessness or insomnia, and finally makes a complete wreck of its victim. Taken in moderation, it acts as a mild stimulant, and ingests a considerable amount of water into the system; it heats the body in winter, and cools the body in summer. Children should never be allowed to drink tea, and it had better be avoided by the young, while it may be indulged in by the aged, as it proves a valuable stimulant as the functional activities of the stomach become weakened.

Freshly boiled water should be used for making tea. Boiled, because below the boiling-point the stimulating property, theine, would not be extracted. Freshly boiled, because long cooking renders it flat and insipid to taste on account of escape of its atmospheric gases. Tea should always be infused, never boiled. Long steeping destroys the delicate flavor by developing a larger amount of tannic acid.