On an Apple Watch, "core sleep" is another name for light sleep, which scientists also call stages N1-N2. It is not a type of deep sleep, and has no relation to REM. But in the sc ...

It's no secret that a good night's sleep is key to a healthy brain. However, the full extent of the importance of rest on our cognitive function is still being explored. And now, new research has ...

Persistent Link: https://ieeexplore.ieee.org/servlet/opac?punumber=6287639 ...

New Study Links Lower Proportions of Certain Sleep Stages to Brain Changes Associated With Alzheimer's Disease Mar. 31, 2025 — New research reveals that lower proportions of specific sleep ...

Although sound machines can effectively block out noises while you sleep, the best sleep earbuds offer a more compact, subtle, and personal approach that won't wake the partner sleeping across ...

What Is Obstructive Sleep Apnea? Obstructive sleep apnea is when something blocks part or all of your upper airway while you sleep. This means your diaphragm, a muscle that helps you breathe in ...