Medically reviewed by Sanja Jelic, MD Key Takeaways Sleep paralysis happens when you wake up but can't move for a few minutes ...

Anyone who suffers from chronic headaches or worse, migraines, knows that lack of sleep can sometimes be the culprit. And anyone whose been victimized by a migraine also knows that losing sleep can be ...

New neuroimaging research shows that when sleep-deprived people lose focus, the brain briefly shifts toward sleep-like physiology, offering fresh insight into why cognitive performance declines ...

You’ve likely experienced it – waking to find your partner urgently informing you that you spent half the night having an animated conversation with no one. Or perhaps you’ve been the one awakened by ...

Sleep loss can trigger relapse, particularly in the form of mania, in people with a diagnosis of bipolar disorder, finds a study by Cardiff University. The new research, led by Cardiff University PhD ...

Sleep talking might sound funny, but it’s often a sign of something deeper. It starts with a mumble. Maybe a laugh. Sometimes even a full-blown rant. But the person lying next to you has no idea they ...

Many people struggle with occasional sleep problems, leading them to seek out sleep medications for a restful night. While these medications can be effective, some come with a surprising side effect: ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." You’re not yourself when you don’t get enough sleep, making it hard to stay focused on just about ...

Scientists have long wondered whether depression leads to less sleep or whether a lack of sleep triggers depression. A new study suggests it's the latter: Getting less than five hours of sleep a night ...

If you have bipolar I, you’re probably familiar with the emotional peaks and valleys that the condition is characterized by. “With bipolar disorder type I, the person either gets very, very depressed ...