3. The Caffeine Can Drastically Improve Physical Performance
Caffeine stimulates the nervous system, causing it to send signals to the fat cells to break down body fat. But caffeine also increases Epinephrine (Adrenaline) levels in the blood. This is the “fight or flight” hormone, designed to make our bodies ready for intense physical exertion.
Caffeine makes the fat cells break down body fat, releasing them into the blood as free fatty acids and making them available as fuel. Given these effects, it is not surprising to see that caffeine can improve physical performance by 11-12%, on average. Because of this, it makes sense to have a strong cup of coffee about a half an hour before you head to the gym.
Bottom Line: Caffeine can increase adrenaline levels and release fatty acids from the fat tissues. It also leads to significant improvements in physical performance.