Add Yahoo as a preferred source to see more of our stories on Google. When you're trying to sleep well, there common rules, like no caffeine after 2pm, no phones in the bedroom. But sleeping in 90 ...

When you're trying to sleep well, there common rules, like no caffeine after 2pm, no phones in the bedroom. But sleeping in 90 minute segments probably isn't a habit many people strive to implement.

Ever wonder why some mornings you wake up ready to go, and others you feel like a zombie? The difference often comes down to when you wake up during your sleep cycle, and that’s exactly what a sleep ...

Most experts recommend getting seven to nine hours of sleep a night — so why do we sometimes get a full night’s rest and still wake up feeling tired? It may have something to do with the point in the ...

In my last post, I asked, "Are you getting enough sleep?" Today, in an effort to better understand the role of sleep in our lives, I ask a very basic question: What happens when our heads hit the ...