Revisit that expectation. When I sequenced my DNA years ago, I discovered that I'm a slow caffeine metaboliser (longer half-life than most) AND I'm in the popul

Revisit that expectation. When I sequenced my DNA years ago, I discovered that I'm a slow caffeine metaboliser (longer half-life than most) AND I'm in the population likely to drink the most coffee - I drink 5 cups per day currently, my grandpa drank 24 at his peak.