A recent study suggests that pink noise may interfere with REM sleep nd reduce overall sleep quality. The researchers say ...

Sound machines promise better sleep, but new research suggests they may quietly steal your REM and deep sleep.

Sound machines may not be the sleep saviors many believe. Researchers found that pink noise significantly reduced REM sleep, ...

A Penn Medicine study challenges sound machine benefits, finding that "pink noise" disrupts deep sleep and REM cycles, while earplugs are proven more effective.

I tried Amazon's popular Big Red Rooster machine, a white noise machine for people who can't sleep. The sleep machine has over 22,000 five-star ratings, and this is my personal review.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." You probably know about white noise, or have seen one of those humming machines outside a therapist's ...