The refreshing effects of tea are due to the alkaloid it contains. The circulation of the blood is increased and the elimination of carbon dioxide by the lungs is heightened. The reflex excitability of the nerve centres is roused and this increases the awareness of the tea drinker and wakefulness. Tea promotes the peristalsis of the intestines.
Tea is therefore a stimulant! It rouses the tissues to increased action and make us less sensitive to fatigue, and enables us to do more work than we otherwise could. The differences between these stimulants and alcoholic stimulants are worth noting. Tea, as does coffee, keeps us awake and attentive. People who have drunk tea in order to stay awake at night, perhaps to study, will know how under its influence the receptive powers of the brain seem to be at its maximum, and that they can get more work done. Tea causes increased mental function without rousing the imagination as a glass of wine may do! Often a glass of wine tends to induce sleepiness before the work has been finished.
The tannic acid in tea is one of the reasons why as a drink so attractive. It is slightly astringent, and clean in the mouth, and does not 'cloy the palate'.
These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.
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