A polyphasic sleep schedule breaks sleep into multiple short periods each day instead of one long stretch at night. These schedules can lead to sleep deprivation and health risks because they often ...

Carley Millhone is a writer and editor based in the Midwest who covers health, women's wellness, and travel. Her work has appeared in publications like SELF, Greatist, and PureWow. Polyphasic sleep ...

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

Can knowledge of how our ancestors slept truly lead us to a life of more natural—and healthy —sleeping patterns? Authors on the Internet have been exploring that possibility, writing a spate of recent ...