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Plain explanations of what alcohol actually does — the pharmacokinetics, the arithmetic, and the screening tools. No myths, and no permission slips.
Only time lowers your blood alcohol — not coffee, not a shower, not sleep. The rate your liver actually works at, and why the answer is never a green light.
Widmark's equation, the Watson body-water formula, per-drink absorption and steady-rate elimination — plus an honest account of what the model cannot see.
Three questions from the WHO's AUDIT, a number from 0 to 12, and a good deal of care needed in how you read it.
One line that applies to everything here. A blood-alcohol estimate is never a clearance to drive. Impairment outlasts the number, and no model can measure you. Never drive after drinking, whatever any figure says.