I call bullchit.

You gain .02% blood alcohol per beer. 48 beers = a b.a. of .96%.

But you burn off .02% per hour, so you can drink a beer an hour and never get drunk. If the guy was up for 20 hours in a day, he'd burn off 40 points and still have a blood alcohol of .56%.

Nope. At less than .40% folks go into an alcoholic coma, and at about .50% they die.

Oh, I have 3 beers at bedtime and usually none during the day. Some of the ones I like have more than the usual amount of alcohol, though.