of Green tea
Green tea is a mild stimulant to the nervous system. Green tea is also known as a bronchodilator, diuretic, and recommended supplement for many weight loss programs.

It contains powerful antioxidants (bioflavonoids), which help decrease bad cholesterol and increases good cholesterol, thus helping to reduce the risk of heart disease. It also contains the catechin EGCG, another potent antioxidant that is capable of acting against carcinogens and helps reduce high blood sugar for those who suffer from diabetes. Moreover, unlike black teas, the unfermented leaves of green teas contain higher amounts of polyphenols—powerful health promoters which inhibit the damaging effects of free radicals that damage cell tissues.
Green tea is rich in essential minerals: manganese and fluoride, which help strengthen teeth enamel and reduce plaque formation.

Green tea contains vitamin A, E, & B–these complex vitamins help in the metabolism of carbohydrates. Vitamin C, also found in green tea, helps reduce stress, fight infection and strengthen the immune system.

The caffeine content of green tea is lower than in black tea or coffee. The caffeine levels in green tea provide the desired stimulating effect against drowsiness without causing nervousness or insomnia. A cup of green tea contains between 8 and 10 mg of caffeine, while black tea contains at least double that amount: 40 to 60 mg.