Your nightly sleep cycle plays a key role in the quality of your sleep. Here's what happens in each stage and why it matters ...

Researchers trace how different sleep stages may fine-tune what we remember, trading specifics for more general knowledge.

Deep sleep refers to slow-wave sleep — a stage in the sleep cycle when brain waves slow down. Getting enough deep sleep is crucial for numerous bodily functions. But how to increase deep sleep isn’t ...

As we sleep, our brain moves through four stages and two phases: non-rapid eye movement (NREM) and rapid eye movement (REM). The brain has four stages within the NREM phase. Each stage and phase of ...

Eat a balanced diet. You get lots of essential nutrients — like fiber and magnesium — from food. They can help support ...

Two particular phases in your nightly routine seem to play outsize roles in cognitive health. By Mohana Ravindranath A good night’s sleep isn’t just about the number of hours you log. Getting quality ...

Have you ever wondered what actually happens in the brain during sleep? While your body appears still and at rest, your brain remains highly active, carrying out essential processes that keep you ...

Achieving restful sleep is crucial for overall health, impacting metabolism and brain function. Research indicates that synchronized brain waves durin ...

Sleep works magic on memory. You might’ve felt these frustrations before: Trying to learn a guitar riff, shoot a free-throw, or nail a difficult phrase in a new language, but despite hours of practice ...

This transcript was prepared by a transcription service. This version may not be in its final form and may be updated. Charlotte Gartenberg: Do you find it hard to fall asleep? If you do, you're not ...

7-9 hours remains the guideline, but not everyone needs that much sleep. Some need less, some need more. Sarah Mitroff/CNET If you find yourself asking, “How much sleep do I need?” you’re not alone.

Elon Musk recently bragged he’s working 120 hours a week at DOGE (leaving less than seven hours a day for literally everything else a human has to do). As in many things, Musk is an extreme case. But ...