Alcohol education classes promote (or used to promote…I had to attend one a couple of decades ago in college), the 1-2-3 system.

Not more than 1 unit an hour, don’t average more than 2 units a day over a week, and never exceed 3 units a day.

The caveat here is that a unit is much less than a regular serving size. A pint of beer is usually closer to 2 units.

So the recommendation was to not average more than a pint of beer a day, and to never drink more than about 1.5 pints in a day.

It’s much more stringent than people imagine.