Chug lots of water
"Staying hydrated is important, but it may not be the best strategy to drink a huge glass of water before bed or sleep with one water by your bed." "unless your goal is to get up in the middle of the night to use the bathroom. Instead, he suggests, make sure you're drinking plenty of water throughout the day—and always be sure to use the bathroom before you head to bed, even if you don't feel like you have to.