REM stands for rapid eye movement — a stage in the sleep cycle when your brain is almost as active as when you’re awake. Getting enough REM sleep is crucial, as it helps you store information and ...

When a newborn twitches, smiles, or makes small movements in their sleep, parents often wonder if their baby is dreaming. The ...

When you zone out after pulling an all-nighter, the brain flushes out cerebrospinal fluid (CSF), which surrounds the brain ...

We're spending some time this morning thinking about sleep. Do we really need it? How do we get more? And what happens inside our brains when we're doing it? We're going to introduce you now to ...

The internet claims waking at the end of a sleep cycle will leave you refreshed, but experts aren’t convinced. By Clarissa Brincat Published Sep 9, 2025 9:00 AM EDT Image: DepositPhotos Get the ...