Believe it or not, some people need up to two hours to wind down. Yes, two whole hours. And of course, what you do during that time matters, too. Watching a stimulating movie or doing intense exercise, of course, is not winding down, nor is scrolling on your devices. Figure out just how long you need to get settled in, and use that time to truly relax. By the time your head hits the pillow, your body and mind will be ready to snooze.