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Every night, I—like millions of others—put on a noise machine to help me sleep. Mine offers several types of noise: white, pink, green, and brown. I’ve noticed something strange, though. After about ...

Are you one of those people who can’t drop off to sleep if it’s “too quiet”? If so, you’re not alone. According to a 2023 survey of UK participants, 50% of people listen to some kind of noise to help ...