The ways in which people fall asleep are just as personal — and strategic — as the clothes we choose to snuggle under the covers in. Take me, for example: I can’t doze off unless I’ve read a few pages ...

Go to sleep in a much more relaxed state. Have you ever watched a video that sent a chill up your spine, made your head tingle, or helped put you to sleep? If so, have you ever wondered why? What ...