A Scientists’ Guide to Better Sleep

Clean sheets, the ideal temperature, and other expert tips

Credit: Burak Karademir/Getty Images

YYou already know that getting enough sleep each night is important for your health. Time spent sleeping is only part of the equation, though. Yes, getting a full night’s rest is great, but only if it’s actually restful. Those seven to nine hours aren’t as restorative if they aren’t uninterrupted, in line…