The Truth About Coffee and Energy

When we feel tired, we used to drink a coffee to feel more active. But if a coffee

doesn't have almost any calories, where this energy is coming from? First,

the caffeine blocks adenosine, the chemical that makes you feel sleepy. And second,

it triggers adrenaline which helps release glycogen and fat into the bloodstream. So,

coffee doesn't create energy out of nowhere. It lets you burn what you already have.

Basically, it's just borrowing energy from your reserves. And this is why

the coffee high doesn't last forever because you're borrowing energy from your own body.

And that's why if you are down on calories, relying just on caffeine doesn't