Coffee Overconsumption

The habit of drinking 5 or more cups of coffee per day to compensate for fatigue caused by sedentary, mentally demanding desk work — creating dependency and disrupting sleep.

Why this habit matters

  • Sleep: Caffeine consumed after 2pm reduces deep sleep by 20% even when consumed 6 hours before bedtime — creating a sleep debt that drives next-day fatigue and more coffee.
  • Physical: 5+ daily cups elevates cortisol, increases blood pressure by 5-15 mmHg, causes digestive acid overproduction, and creates physiological dependence within 3-7 days.
  • Psychological: Caffeine withdrawal (12-24 hours off) causes headaches, irritability, and brain fog — meeting the clinical definition of physiological dependence recognized by DSM-5.

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