 Complete silence while you're trying to sleep because your brain, if you have all that noise going on, it's trying to interpret it. It keeps you from going into the deep beta, delta, and all those different sleep waves, brain waves that gives you the restorative sleep that you need. Noises can disturb your sleep if it's within earshot, no matter what it is. And that means turn off the television when you're trying to sleep, turn off the radio, all of that.