A good night’s sleep isn’t just about the number of hours you log. Getting quality sleep — the kind that leaves you feeling ...

Hallucinogens like DMT, psilocin, and LSD might rewrite the rules of sleep, blurring the line between dreams and reality.

Obstructive sleep apnea (OSA)—when the soft tissues in the throat collapse and block the airway—especially correlates to ...

In the stillness of the night, when the body should lie calm in sleep, something else may be happening beneath the surface.

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 ...

In the quiet hours of the night, while your body rests, your brain is busy. It's sorting through the day’s moments, filing some away as lasting memories, and brushing off others. Scientists have long ...

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

I had a baby six months ago, and for the last month and a half have been unsuccessful in getting my husband to resume our sex ...

Waking up after eight hours of sleep should feel refreshing. Yet, many people open their eyes feeling just as exhausted as ...