How Smartphones Hurt Sleep

http://ifttt.com/images/no_image_card.png The answer to the question "How'd you sleep?" has, for most of human history, been "not too well." Even before the advent of electric light, people slept two or three to a bed, next to a chamber pot, and with a warmth-giving-yet-high-maintenance fire threatening to burn out a few yards away.



from http://www.huffingtonpost.com/healthy-living/