Green tea

„Although green tea does not raise the metabolic rate enough to produce immediate weight loss, a green tea extract containing polyphenols and caffeine has been shown to induce thermogenesis and stimulate fat oxidation, boosting the metabolic rate 4% without increasing the heart rate.“

„Green tea has been used as both a beverage and a medicine in most of Asia, including China, Japan, Korea, Thailand, and Vietnam, to help everything from controlling bleeding and helping heal wounds to regulating body temperature, blood sugar and promoting digestion.“