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
From [Weaver’s Coffee](https://weaverscoffee.com/blogs/blog/how-caffeine-in-coffee-works):
>When caffeine enters the body, it is broken down into three different molecules: theobromine, paraxanthine, and theophylline. Each of these molecules has its own unique effect on the body.
>Theobromine increases oxygen and nutrient flow to the brain. Paraxanthine enhances athletic performance by increasing the rate of fat breakdown. Theophylline increases heart rate and concentration.
>Caffeine also blocks the effects of adenosine, a neurotransmitter that makes us feel tired. This is why caffeine can give us a boost of energy.
Caffeine does not provide energy. It suppresses the chemical that makes you feel tired while stimulating other bodily systems that make you (feel) energetic. If you lacked calories before a cup of unsweetened black coffee, you won’t have any after it either.
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