Main problem for me is a headache the next morning. I once read this is caused by water shortage in the brain (caused by the alcohol). Drinking water is a solu

Main problem for me is a headache the next morning. I once read this is caused by water shortage in the brain (caused by the alcohol). Drinking water is a solution, but normally that goes into the stomach, going to the brain only indirectly. So in 'those cases' I go to bed with a little water that I keep moving round a little in my mouth for a long as am able to (because very soon I fall asleep). If I wake up in the night I do the same again. Next morning again. I read this 'trick' a long time ago in a book about Indians drinking 'fire water'. In general this helps al least for keeping away the headache (not the general slow feeling, not the waking up more often, etc).