Ancient humans did not sleep continuously. They commonly slept in two shifts each night, separated by a period of wakefulness ...

It's a commonly held belief that before artificial lighting, human sleep was 'naturally' divided into two distinct periods, but how true is that?

My bed and I spend less time together than the experts say we should. Most nights, my head hits the pillow around 11:00 pm, and I’m up—without an alarm—at 5:30 am. That six and a half hours of shuteye ...

There are two very different traditions about the value of sleep in productivity. Thomas Edison (1847-1931), whose lifetime of inventions changed the world, believed that sleep was an idle activity ...

It wasn’t just you who rolled over and hit the snooze button this morning. Americans are now sleeping more than at any point in the past two decades, a trend that accelerated during the pandemic, a ...