According to a study published in the American Journal of Clinical Nutrition, green tea extract (50 mg caffeine and 90 mg EGCG) has thermogenic properties, meaning that it increases energy production and promotes fat oxidation in the body. These properties, which are associated with fat burning, appear to be functioning beyond that which can be explained by the caffeine content alone. This would mean that green tea has a variety of rich components able to play a role in helping to control body composition. Source: The American Journal of Clinical Nutrition, Vol. 70, No. 6, 1040-1045. Click here for more Information.