Caffeine has almost no calories, but it gives us energy. Where does this energy come from? Is caffeine making the body use its stored fat?

Question

Caffeine has almost no calories, but it gives us energy. Where does this energy come from? Is caffeine making the body use its stored fat?

In: Chemistry

Answer 1

There is mental and physical exhaustion. Mental exhaustion comes way before physical exhaustion and is often “fake” exhaustion.

Like if you go for a run, your brain is going to be screaming to stop long before your body gives out on you and you are so tired you hit a wall and can’t physically continue. But drugs help augment our mind so it doesn’t tell us to stop