When you’re short on sleep and your focus suddenly drifts, your brain may be briefly slipping into cleanup mode. Scientists ...

We already know that the stimulating powers of caffeine make it an unsuitable choice for a late-night drink – at least if you want to get any shut-eye. But a new study adds a whole extra level of ...

If the organ doesn't get time to clean itself at night, it'll find (often inconvenient) time during the day.

Sleep Cycles: One rapid eye movement (REM) stage and three non-REM stages that altogether last about 90 to 120 minutes Benefits: Physical and mental recuperation and memory consolidation Disorders: ...

Caffeine doesn't just make it harder to fall asleep; it changes how the brain behaves during rest. New research shows that caffeine alters brain activity in ways that make sleep look more like ...

It "may help mitigate cognitive decline related to fatigue," a neurologist explains.

While the brain sleeps, it clears out harmful toxins, a process that may reduce the risk of Alzheimer's, researchers say. During sleep, the flow of cerebrospinal fluid in the brain increases ...

The study explains that cerebrospinal fluid (CSF), which normally moves during sleep to clear waste products accumulated in ...

Getting a bad night’s sleep is no longer just about feeling tired the next day. Neurologists say chronic sleep deprivation is increasingly being understood as a root cause of several neurological ...