Tea contains caffeine which, when taken in the proper quantity, simulates every organ in the body. It has a particularly strong effect on the central nervous system, heart and liver. This reaction is even more pronounced when one is sleepy or tired. A cup of tea or coffee will help clear a dull mind after rising in the morning or after a prolonged period without sleep. The power to stimulate and awaken the mind comes from caffeine. It is also said that the amount of caffeine contained in normal servings of green tea can stimulate the skeletal muscles and facilitate muscular contraction. For this reason, it is quite helpful to drink tea or coffee in the middle of work to refresh the mind and restore the body. We find it noteworthy that there is some scientific support for such old customs as the afternoon snack, coffee break or tea time ritual.
The caffeine in green tea is mostly extracted in the first infusion of the leaves, but the quantities in subsequent infusions will still be greater than coffee. And since green tea caffeine combines with catechin in the brewing water, its action is said to be rather milder than other caffeine-containing beverages. Even so, some people are sensitive to caffeine and cannot sleep if they drink green tea before going to bed. It is safer for such individuals to drink a weak green tea after dinner.
Why not treat yourself to a zestful day by enjoying the positive effects of mild caffeine with the sweet aroma of green tea?