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 ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." We all could probably use a little more energy these days, right? Maybe you’re managing a busy job, ...

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 ...