I have been realizing this point myself, BUT sometimes I just get ramped up and keep going!My girl and I drink a bottle of wine just about every night, sometimes more, especially if we're cooking. With that as a base and the occasional hard night out, my tolerance is pretty high. Over the years I've gotten better at realizing I'm drunk enough and slowing down as the night goes on. As long as I get enough sleep I'm fine for whatever the next day brings. I do drink a lot of water.