What is the 123 rule for drinking?
It sets clear limits: no more than 1 standard drink per hour, no more than 2 drinks per day, and at least 3 alcohol-free days each week. The rule is based on the fact that the liver can process roughly one drink per hour, which is why this limit is recommended. According to the US Coast Guard, the 1-2-3 rule is: No more than one standard drink per hour. No more than two standard drinks per occasion.