If you look at the label of almost every commercial weight loss and fat burning supplement, chances are that you will find some kind of tea there as an ingredient.
This is because green tea has been repeatedly shown to increase the burning of fat, especially during exercise.
In one study, men who took green tea extract and exercised burned 17% more fat than men who didn’t get the supplement. This study suggests that green tea can boost the fat burning effects of exercise (8).
Another study that went on for 8 weeks showed that green tea increased fat burning, both during exercise and during rest (9).
Bottom Line: A number of studies show that green tea extract can boost the burning of fat. The effect is even stronger when exercising.