How Coffee Hacks Your Brain—Wakefulness in a Cup

Caffeine is the world’s most popular psychoactive substance—but how does it make us feel awake? The answer lies in chemistry: caffeine mimics and blocks the sleep signal in the brain, keeps neurons firing, and triggers adrenaline release.

🔍 In this video you’ll uncover:

1. How caffeine blocks adenosine receptors, preventing the drowsiness signal and keeping neurons active. ([turn0search0]turn0search3])

2. The cascade effect: increased dopamine, norepinephrine, serotonin, and adrenaline release that boosts mood and alertness. ([turn0search3]turn0search4])

3. Lesser-known mechanisms: phosphodiesterase inhibition increasing cAMP, and calcium mobilization—active only at high, atypical doses. ([turn0search3]turn0search4])

4. Why you feel energized: your body perceives stress, raises heart rate, pupils dilate, and sugar floods the system. ([turn0search0]turn0search9])

5. Tolerance builds as your brain creates more adenosine receptors, making you need more caffeine over time. ([turn0search11]turn0search19])

6. Tips on smart use: aim for moderate doses under 400 mg per day, avoid late-day intake, and consider caffeine naps for boosting alertness without overdoing it. ([turn0news16]turn0news15])

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#Caffeine #HowCaffeineWorks #BrainBoost #CoffeeScience #Alertness #Adenosine #Neurotransmitters #ScienceExplained