 Stop sleeping with your TV on. It's even worse for you than you think. Even though half Americans do it, the artificial light and inconsistent sleep patterns could be mixing up your body's metabolism, leading to some serious health risks. And those nightmares you've been having? Well, when we fall asleep, our subconscious is still paying attention. So if there's a scary scene playing in the background, chances are it'll appear in your dreams. Your router might also be to blame. Even the smallest LED lights can disrupt your sleep. Cover them with stickers. You'll be glad you did in the morning.