Common sleep aid could be quietly interfering with your rest, study suggests

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 could disturb REM sleep (dream sleep) and sleep recovery.

The research, published in the journal Sleep, found that earplugs were significantly more effective at blocking out traffic noise during sleep.

SIMPLE NIGHTLY HABIT LINKED TO HEALTHIER BLOOD PRESSURE, STUDY SUGGESTS

The...