But how do sleep cycles work? To find out, I took part in a polysomnography. This is a gold standard sleep study that helps ...

Michael Gradisar, Sleep Cycle’s head of sleep science, evaluated five popular sleep hacks and revealed whether to toss ’em — or turn ’em into reality. “Let’s just say those of us who earn a living ...

Not getting enough of deeper stages of sleep raises the risk of brain deterioration associated with Alzheimer’s disease, a ...

Deep sleep plays an important role in learning and memory storage, "by facilitating a process called 'memory consolidation,' ...

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A sleep doctor reveals the optimal time of day to take a nap in order to feel rested and reap the health benefits.

Believe it or not, science says you can take a guilt-free afternoon nap. No, really. Getting all of your sleep in a single stretch is the most common sleep cycle, but it may be beneficial to split ...

“Our findings provide preliminary evidence that reduced neuroactivity during sleep may contribute to brain atrophy, thereby ...

Analyzing data from the National Health and Nutrition Examination Survey from 2015 to 2020, researchers in the new study looked at overall sleep quality and the presence of five stages of CKM ...