Did you know that caffeine is found in almost every commercial fat burning supplement?
There’s a good reason for that… caffeine is one of the very few natural substances that have actually been proven to aid fat burning.
Several studies show that caffeine can boost the metabolic rate by 3-11% (10, 11).
Other studies show that caffeine can specifically increase the burning of fat, by as much as 10% in obese individuals and 29% in lean people (12, 13).
However, it is possible that these effects will diminish in long-term coffee drinkers.