I’ve read many takes that say coffee just works by blocking the receptors that make you sleepy, but my question is, why is it upon drinking coffee that I experience more energy? The feeling is that it actually gives me energy, not just a baseline state of not being tired.
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Beyond simply blocking adenosine (a sleepiness chemical) receptors and preventing the feeling of sleepiness, caffeine is also a stimulant in some other respects. Particularly in people who don’t drink it often, it can have a striking effect on motivation and feelings of subjective energy (not to be confused with the actual energy you get from food–the two are actually pretty different.)
That said, we all have some degree of adenosine at baseline, and feelings of sleepiness throughout the day. If our normal baseline is faint sleepiness, a zero-sleepiness state probably does feel noticeably more energetic.
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