You've probably experienced it—your alarm is set for 6:30 a.m., yet somehow your eyes snap open a few minutes before it goes off. There's no sound, no external cue, just the body somehow knowing it's time.
Dec 13, 2025
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Scientists at the University of Kentucky have uncovered a new reason why people with Alzheimer's disease often struggle with sleep, long before memory loss begins. The study, led by researchers at the Sanders-Brown Center ...
Mar 3, 2026
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It's no accident that we spend a third of our lives asleep. It is essential to our health, and even animals for whom resting is complicated—such as aquatic mammals that need to surface to breathe, or birds that go up to 10 ...
Jun 7, 2026
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Disruptions to our circadian clocks—the internal molecular timekeepers "ticking" in nearly every cell of our body throughout the day—can lead to a wide range of health problems, from sleep disturbances to diabetes and cancer. ...
Dec 22, 2025
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University of Texas at Dallas researchers, in partnership with Texas-based biotech company EnLiSense, have demonstrated a pioneering wearable perspiration-based sensor that measures two key hormones that regulate the body's ...
Jan 15, 2026
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Natural killer (NK) cells are the bodyguards of our immune system. As a first line of defense, they destroy invading pathogens, foreign bodies, and infected cells in early stages, thereby preventing them from spreading. NK ...
Dec 10, 2025
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Researchers at Tsukuba University in Japan report that memories acquired while awake are stored in a more permanent form (called memory consolidation) during the REM stage of sleep, and that this process requires the reactivation ...
Sep 2, 2025
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Sleep is one of the most widely studied states of consciousness, known to play a role in physical recovery, the processing of memories and the regulation of immune functions. During sleep, the brain transitions between light ...
It begins with two people, one blanket, and two very different ideas of what's a comfortable sleeping temperature. By midnight, one partner is hot and sweaty while the other is freezing.
Dec 21, 2025
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Sleeping in on the weekend to catch up on sleep lost during the week may be good for adolescents' mental health, according to new research by the University of Oregon and the State University of New York Upstate Medical University.
Jan 7, 2026
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