You guys are tempting me heavily to plot my drinking on a graph then calculate the best fit curve just so I can win the contest. Usually around 2, sometimes more. Really whether I drink a lot in a night depends what fitness training I have planned. If I'm doing a late night run I'll hold off until my metabolism has died down, but if I am doing nothing in a night I'll start drinking the moment I sit down and watch TV. If I'm out with my friends, usually 2.