Caffeine: can it be used to our advantage?
Caffeine speeds up our metabolism (it can be found as a main ingredient in most weight-loss products). It also increases the breakdown of fat, freeing fatty acids, which are used in energy production during exercise. Conversion of fat to energy is about 30% more efficient when caffeine is consumed prior to exercise.
Does this mean that caffeine burns fat? Not exactly. The caffeine-enhanced fat breakdown can only occur during exercise. While the fat is being burned, glycogen and glucose are being reserved, allowing blood sugar levels to remain higher for longer. Higher glucose levels ward off hunger. This is why coffee is popular among students and think tankers. The brain functions exclusively on glucose, and higher blood sugar levels facilitate thinking.
If I'm reading this right, it means that caffeine speeds up metabolic rates and, when combined with exercise, can lead to weightloss.