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Scientists have just defined five sleep profiles — and some could help spot mental illnessResearchers have identified five distinct profiles that map to certain brain signatures. Each profile is tied to certain behaviors and cognitive issues.
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REM sleep may reshape what we rememberResearchers trace how different sleep stages may fine-tune what we remember, trading specifics for more general knowledge.
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Abandoning daylight saving time could prevent over 300,000 stroke cases a year in the US, study claimsSpringing forward by an hour each March knocks the circadian rhythm out of alignment. A new model of the chronic health impacts argues for scrapping it entirely.
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Can you dream during non-REM sleep?People report vivid dreams during rapid-eye-movement sleep. But is this sleep stage really the only time we dream?
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Sleep: Facts about how and why we sleepLearn facts about sleep, during which the body rests, recuperates and performs essential repairs.
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Rare genetic mutation lets some people thrive on just 4 hours of shut-eyeA newly identified mutation helps super-sleepers get by on just four to six hours of shut-eye per night, while the rest of us need around eight hours. Researchers described the SIK3-N783Y mutation in a new study after testing it on sleep-deprived inbred mice.
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Why do we get a 'second wind' of energy at the end of the day?That second wave of energy is a normal part of the human circadian rhythm, but lifestyle factors also play a role.
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Science of sleep quiz: How much do you know about sleep and dreams?Test your knowledge of how sleeping and dreaming work.
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Early study reveals why sleeping pills may not supply the best-quality snoozeA new study in mice suggests that sleeping pills may impede the brain's ability to "cleanse" itself during sleep.
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