If you turn on a light in a pitch black room, you’ll be more startled than if your room is lit by a softer night light. Think of it like keeping a nightlight on while you sleep, explains Raj Dasgupta, MD, assistant professor of clinical medicine and sleep expert at Keck Medicine of USC.
White noise works by reducing the difference between background noise and jarring sounds (called arousals) like a screeching car. White noise is a sound that is played at the same frequency over and over again it is not the same thing as the thunderstorms, chirping birds, and other relaxing ambient sounds compiled on YouTube, which are often confused for white noise. Think about the sound of your hair dryer or the rhythmic hum of a fan. If you haven’t heard of white noise, you’ve probably experienced some form of it inadvertently. MORE: Could Sleep Tracking Be Making Your Sleep Worse? Given the consequences of our sleeplessness, it’s not surprising that more people than ever are looking for solutions-even seemingly counterintuitive ones like extra noise. (Here's how spending just one extra minute on your phone before bed can rob you of 60 minutes of sleep.)Īn astounding one-third of Americans are not getting enough sleep, according to the CDC, which can lead to cognitive impairment and an increased risk for heart disease, diabetes, mental health issues, and obesity. Sleep experts see white noise as a small piece of a complex puzzle to achieving quality sleep that also includes factors like your bedtime ritual, what you eat, how you’re feeling, and what you did during the day. Getting a good night’s sleep doesn’t just happen. (Transform your health with 365 days of slimming secrets, wellness tips, and motivation-get your 2018 Prevention calendar and health planner today!) Once a popular tool for soothing newborns and colicky babies, 5% of American adults now report using a white noise machine at night to help get better sleep, according to a survey conducted by the National Sleep Foundation. White noise machines are moving out of the nursery and into the master bedroom.
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