A person’s sleep needs are highly individual, Holliday-Bell says. If you feel refreshed and ready for the day after nine ...

Mounting evidence suggests there might be two separate types of the world’s fastest-growing neurological condition. Can this ...

Setting multiple alarms can disrupt REM sleep, causing lethargy, mood swings, and higher cortisol levels. Experts advise ...

Healthy sleep includes multiple components, such as number of hours of sleep per night, how long it takes to fall asleep, daytime functioning and self-reported sleep satisfaction, and addressing these ...

Tampa Bay physicians are urging night owls to pay attention to a recent study linking poor sleep health to Alzheimer's ...

Sleep quality matters more than quantity. Learn why you might still feel tired despite getting eight hours of sleep and how ...

Medically reviewed by Sanja Jelic, MD As we sleep, our brain moves through four stages and two phases: non-rapid eye movement ...

A combined analysis of recent research indicates that lower satisfaction with sleep is associated with higher blood pressure ... and rapid eye movement (REM), the deepest stage of sleep.

The most frequently reported highly positive dreams were joy, lust, calmness, surprise, and playfulness. Dreams with maximal positive or negative intensity ratings occur with comparable frequencies.

Healthy sleep includes multiple components, such as number of hours of sleep per night, how long it takes to fall asleep, daytime functioning and self-reported sleep satisfaction, and addressing these ...

During REM sleep, breathing becomes faster and blood pressure and heart rate become less regular. People generally cycle through these four phases 4–6 times each night. Previous research has shown ...