John, Your 60G idea is good enough to make the point. Glad you thought to ask the question like that.

Another way to put it is with a bowling ball. Put your hand on a hard surface then drop a bowling ball on it from 15 inches. OUCH, likely broken bones...

Experts suggest that a single serving of alcohol per event is fine. With some, they even thing there may be relaxing benefits of that single drink that out weight the negatives so a single drink at the end of the day is OK, if it does not cause symptoms. Some people are reactive to a single drink.