Green tea

„Flavonoids are a group of phytochemicals present in most plant products that are responsible for health effects such as anti-oxidative and anticarcinogenic functions. However, based on the same USDA survey, the content of flavonoids may vary dramatically amongst different tea products.“

„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.“