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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Photo: Ground Picture / Shutterstock In the relentless bustle of our everyday lives, sleep is something both precious and needed ...

Sleeping for 7 to 9 hours at night isn't the only way to catch some z's. Here are four alternative sleep cycles -- and they're pretty obscure. Annie Miller Medical Reviewer Annie Miller is a licensed ...

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 ...

Experts say it’s an important question to consider. Most of us spend a third of our lives sleeping, but you may need more or ...

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 ...

Do you ever go to bed early because you need to get up on time for work, then feel even more exhausted in the morning? Well, you might be approaching it the wrong way. Don't simply assume that by ...