Sleep

More than 400 elderly people were studied over three years for signs of poor sleep, along with declining motor and walking skills, that can contribute to dementia.

A study found that the Pentagon is doing a lot to improve troops' sleep habits, but more needs to be done.

Sleep experts say watching TV and using devices within an hour of bedtime can disrupt sleep. The study concludes this may not be true of everyone.

Feeling groggy these days? NPR's Life Kit has science-based strategies to help you sleep better, deeper and longer.

Burnt out much? A study links working late, or variable shifts with health problems later in life. Maybe it's time to quit hustle culture for good.

Scientists think the timing of exercise might matter for performance — and for your overall health. Here's what to know about their latest findings.

Should you stress about getting eight hours of sleep a night? Nope! Some experts say skip the worry and focus on keeping a consistent sleep schedule instead.

About 90 million Americans report snoring occasionally, and of those, about 37 million say they snore regularly.

Call it "precision waking" — the alleged ability to decide when you want to wake up and then doing so, without an alarm. If you think you can do it, you're not alone, though how is still mysterious.