Getting a full eight hours of sleep and still feeling drowsy? Sleep experts say it’s not just about how much shuteye you get.
Dr. Wendy Troxel, a licensed clinical psychologist and senior behavioral scientist at RAND based in Utah, emphasized the "really important distinction" between quantity and quality of sleep.
"Many people will say, ‘Man, I'm sleeping enough, I got seven to eight hours of sleep, but I still wake up feeling groggy and not refreshed,’" she told Fox News Digital during an in-studio interview. "About one in three adults has non-restorative sleep quality."
"There are many factors that can contribute to poor sleep quality, regardless of how many hours you slept," Troxel noted.
These include drinking alcohol — a "major contributor" to poor quality or disrupted sleep — and consuming caffeine late in the day.
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