Pro tip: put your alcohol and your water in 2 identical water bottles. By the end of the night you should have drunk equal amounts of water and alcohol!

I found this out by accident, I had a water bottle I love so I bought another and filled one with a mixed drink and one with water while I played video games last night. I kept getting them mixed up so I drank a lot more water than I usually do and woke up with barely a hangover! (I did have to pee twice as much though).