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 ...

Add Yahoo as a preferred source to see more of our stories on Google. MIT study reveals how sleep deprivation causes your brain to flush itself clean while you’re awake, disrupting focus and ...

Most people think sleep is just downtime, but turns out your body is actually pretty busy while you’re sleeping. Your metabolism doesn’t just clock out when you fall asleep – it’s more like switching ...

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 ...

Ever wonder why some mornings you wake up ready to go, and others you feel like a zombie? The difference often comes down to when you wake up during your sleep cycle, and that’s exactly what a sleep ...

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 ...

We all know that a solid night’s sleep is important. But let’s be honest: Getting enough sleep is easier said than done. In fact, 1 in 3 adults aren’t getting the rest they need, according to the ...

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 ...