Green tea assists fat burning after consumption, which is heightened with exercise. Tea extract is extremely precious when it is used in fat supplements. Men who took green tea extract and then who exercised burned over 15% more fat than men who did not take the green tea extracts. Green tea boosts the effects of burning of fat, which reduces body fat over time. It also boosts the metabolic rate and makes you burn calories all day. The body is always burning calories. When we are sleeping, or sitting down cells are burning a lot of energy all time. Studies have shown that green tea increases the rate that you burn calories even when you are sleeping. The effects of weight loss honestly depend on your body weight and metabolism and the boosting effects.