How does coffee work? What even IS caffeine? 🤔☕️ Caffeine works primarily by blocking adenosine, a neurotransmitter that makes you feel tired and sleepy. By preventing adenosine from binding to its receptors in the brain, caffeine promotes alertness and energy. This stimulant also triggers the release of adrenaline and dopamine, increasing heart rate, breathing, and feelings of well-being! #science #science #coffee | Learning with Lyrics

Caffeine doesn’t give you energy. It blocks your ability to sense fatigue. Same thing? Well, kind of. Adenosine is the molecule that builds up as your brain burns fuel all day and creates sleep pressure. Caffeine’s hack is it blocks that adenosine signal. And it works. Until it doesn’t. If you’re crashing in the afternoon despite “sleeping fine,” this reel explains why. Use caffeine as a tool, not a drip. Sleep is the only real reset. | Hormone Specialist