Sleep Disorders

Imagine being trapped in a cave or being completely blind. Would you know when to sleep and wake? And how would that throw off your body clock?

By Jennifer Walker-Journey

Four weeks and 4,000 miles is a long time to get by on catnaps during a solo sailing race. So, researchers set out to find whether there was a sleep strategy that worked best.

By Nathan Chandler

If you sleep with someone who snores, you may've read that you should wake them up and have them turn on their side to stop the problem. But does it work?

By Dave Roos

Do you have trouble falling asleep or staying asleep? We'll give you the most common reasons why you're tired and how to fix them.

By Dave Roos

Not getting enough quality sleep can take a serious toll on your mental and physical well-being. It can also shorten your life.

By Carrie Tatro

Are you one of those people who can't fall asleep without the sound of a fan? The reason may have something to do with your "sleep spindles."

By Alia Hoyt

Even if the film is full of blasting bombs and flashing lights, it might not be enough to stop some folks from nodding off.

By Dave Roos

They're not hallucinations, but they're not just regular nightmares, either.

By Oisin Curran

Don't worry, you'll grow out of it – unless you're among the tiny percent of adults who still experience horrific sleep visions. Learn all about night terrors at HowStuffWorks.

By Oisin Curran

Insomnia can feel like torture, but can it be fatal? The answer is yes, but it's an incredibly rare neurodegenerative disease, normally passed down genetically.

By Maria Trimarchi

You know you're not yourself when you don't get enough sleep, but what really happens to your body when the sandman refuses to visit?

By Maria Trimarchi

Can't sleep? Tossing and turning? Join the crowd. Insomnia is all too common -- but what's keeping so many people from getting the rest they need?

By Maria Trimarchi

Research shows that when we've had too little sleep, our brain activity makes us overly optimistic, so we make some bad choices.

By Tom Scheve

The statistics are alarming: According to the World Association of Sleep Medicine, about 45 percent of the world's population isn't getting enough sleep.

By Tom Scheve

Sleep apnea causes patients to actually stop breathing periodically throughout the night. Learn about the silent dangers of sleep apnea.

By the editors of PureHealthMD

The causes of insomnia are as numerous as the forms it takes. Learn how to combat insomnia arising from medical conditions, jet lag and other causes.

By Virgil D. Wooten

Narcolepsy causes sufferers to fall asleep unexpectedly. How does it work?

By Discovery Fit and Health Writers