ELI5- If calories are units of energy how does caffeine give you energy if it doesn’t contain calories?

Question

ELI5- If calories are units of energy how does caffeine give you energy if it doesn’t contain calories?

In: Chemistry

Answer 1

The energy we feel and the energy in the universe are not the same thing. The word energy is a very broadly used word and can mean different things depending upon what you’re talking about.