Here’s what you’ll learn when you read this story: We have evolved a sleep cycle that goes from non-REM to REM sleep and back again, but until now, the biological function of this oscillation was ...

SUNDAY, June 1, 2025 (HealthDay News) — Your morning cup of coffee might help you power through the day — but could it be keeping your brain too alert at night, even while you sleep? A new study ...

Late-night scrolling isn’t the only thing sabotaging your slumber. New research suggests that a common daily habit may send your brain into overdrive while you sleep — even if you do it hours before ...

You can see it coming in right there, that little spot,” says neuroscientist and engineer Laura Lewis. A remarkably bright pulsing dot has appeared on the monitor in front of us. We are watching, in ...

Brain scans show that while you sleep, your neurons reset, blood vessels adjust, and fluids flush waste products away. But until now scientists still didn't understand exactly why missing sleep messes ...

You might be tempted to sleep in after a late night—but scientists have found that it’s better for your brain and heart health to stick to your regular schedule. The key to better sleep may not be ...

CAMBRIDGE, MA -- Nearly everyone has experienced it: After a night of poor sleep, you don’t feel as alert as you should. Your brain might seem foggy, and your mind drifts off when you should be paying ...

Maybe you know you snore like a bear, but you don’t feel much urgency to look into it. Or maybe you have been told to wear a continuous positive airway pressure, or CPAP, machine for sleep apnea, but ...

Caffeine doesn't just make it harder to fall asleep; it changes how the brain behaves during rest. New research shows that caffeine alters brain activity in ways that make sleep look more like ...