Listening to pink noise could ruin your sleep quality

Pink noise, featuring a deeper, more natural sound such as rustling leaves or steady rainfall is being used by millions to help them fall asleep. — Freepik

Marketed as a ticket to deeper sleep, the soft hum of pink noise has become part of millions’ nightly routines.

However, its use may come at the cost of sleep quality, a University of Pennsylvania, United States, study suggests.