Hack Your Caffeine Clock
Cortisol naturally peaks about 90 minutes after you wake up. If you drink coffee during that window, you dull the effect and build tolerance faster. That's a finding from research tied to the National Institutes of Health.
So try this instead:
1. Wait 90 minutes before your first cup
2. Have your last caffeinated drink before 2 p.m.
3. Keep each dose around 200 mg for best results
4. Take a full week off caffeine each month to reset your tolerance (1/3)