Caffeine and the brain

  • The caffeine in your morning coffee binds to your brain's adenosine receptors, preventing the biochemical from making you tired.
  • Caffeine also builds your adrenaline supply, which increases your heart rate and allows blood to pump faster.
  • Caffeine prevents dopamine from being reabsorbed into your system, causing you to feel happy for longer.
  • The dopamine that lingers in the brain can trigger the brain to crave more caffeine.
  • The more coffee you drink, the more adenosine receptors are formed, which means you may need more coffee to keep you awake.

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Your brain on coffee

Your brain on coffee

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