WTF Fun Fact – Most Popular Psychoactive Drug

Coffee is the most widely used psychoactive drug in the world. Caffeine works by competing with adenosine receptors in the brain. If adenosine is blocked by a caffeine molecule, then one’s feeling of exhaustion is lowered. – WTF Fun Facts

Source: https://www.mcgill.ca/oss/article/infographics-general-science/science-behind-worlds-most-popular-drug

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