Think your sound machine is helping you sleep? It might be doing the opposite. A new study from the University of Pennsylvania Perelman School of Medicine found that listening to pink noise at bedtime ...

Researchers at the University of Pennsylvania conducted a seven-night sleep laboratory study and found that REM sleep decreased by an average of 19 minutes per night when participants were exposed to ...

Pink noise, a staticky sound that’s supposed to help people fall asleep, may actually worsen your rest, a new study found. Pink noise — like white noise — contains all the frequencies humans can hear, ...

What is a sleep study? A sleep study, also known as a polysomnogram, is a diagnostic test that monitors various body functions while a person is asleep. It is most commonly used to diagnose sleep ...

If you sleep through alarms, barking dogs, or a roommate’s late-night commotion, it’s usually not a motivation problem.