sleep

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When School Starts Earlier, Teen Car Crashes Rise

Study compares accidents in 2 similar counties

(Newser) - School start times may be more than just annoying for teenagers: They could actually be dangerous, a study reported in the New York Times suggests. Researchers studying two demographically similar counties in Virginia found that crash rates among 16- to 18-year-olds were higher in the county where teens must wake... More »

Scientists Determine Your 'Optimal' Amount of Sleep

7.6 hours for women, 7.8 hours for men

(Newser) - Suspect you're not getting enough sleep? You can now verify whether that is indeed the case. In a study published last month in the journal Sleep , researchers claim to have determined exactly how much sleep we need: 7.6 hours for women and 7.8 hours for men. The... More »

Why You Should Nap After Coffee

'Coffee naps' produce maximum alertness, scientists say

(Newser) - Debating between a cup of joe or a short nap to make it through the day? Perhaps you should try both. Scientists say a "coffee nap"—having a cup of coffee and then a 20-minute nap—will allow for maximum alertness when you wake, Vox reports. Yes, caffeine... More »

Windowless Offices Cut Workers' Sleep

Researchers point to health issue

(Newser) - No windows in your office? You may be losing sleep over it—literally. Researchers surveyed 22 workers getting natural light exposure and 27 others missing it; they found that those who were getting the exposure at work got an extra 46 minutes of sleep during the work week and reported... More »

One Consequence of Lack of Sleep? False Memories: Study

Study finds sleep-deprived participants more likely to misremember details

(Newser) - Sleep deprivation isn't good for any part of your body, but a new study says it can take a really devastating toll on your memory—finding loss of sleep can leave people with false or inaccurate memories. To get the results, researchers at Michigan State University and the University... More »

8 Hours of Sleep? 7 Might Be Better

CDC is working on new guidelines

(Newser) - How much sleep do you need? The CDC is coming out with new guidelines next year, but a spate of recent research suggests that seven hours is close to the magic number, not eight, reports the Wall Street Journal . Because requirements change from person to person, however, experts suggest spending... More »

Morning People Are Liars at Night

Conversely, night owls are more likely to lie in the morning, study finds

(Newser) - Think morning people are somehow morally superior? Think again, say researchers whose new study, the Morality of Larks and Owls , finds a strong link between a person's ethical inclination and chronotype—which refers to when people are most naturally inclined to be asleep or awake. When outside of one'... More »

'Bedtime Procrastination' Is Making You Sleepy

It's a 'modern phenomenon,' researchers surmise

(Newser) - After a sleepy start to the week, you swore you'd be in bed last night by 10—but when the clock struck midnight, you were still catching up on Game of Thrones. You're not the only one struggling to get to bed despite wanting to sleep: Researchers are... More »

Are Light Bedrooms Making Us Fat?

We've seen 100 years of lighter bedrooms: expert

(Newser) - Here's an odd theory: Researchers at Oxford say one explanation for obesity might be … excessive light in our bedrooms. They aren't yet certain enough to advise a darkness boost, but a study in the American Journal of Epidemiology found that women had larger waistlines if their bedrooms... More »

Your Brain Builds Memories As You Sleep

Which means you should actually go to bed

(Newser) - As you sleep, your brain is actually forming new neural connections, helping you retain the things you learned during the day, according to a new study. Researchers in China and the US used advanced microscopy to peer inside the brains of mice who were learning a new skill. They found... More »

Study: Sleep Less, Eat More

Yet another reason to take sleep seriously: researchers

(Newser) - The way you eat, it seems, is tied up with the way you sleep. Researchers recently found that women who slept fewer than six hours a night took in more daytime calories than did women who slept seven hours, LiveScience reports. And the food consumed by the six-hour sleepers wasn'... More »

We Can Spark Lucid Dreaming: Researchers

By electrically stimulating subjects' scalps

(Newser) - Scientists may have found a way to cause lucid dreams—those experiences in which we know we're dreaming and can, in some cases, control the dream. The key, explains an expert, is electric scalp stimulation. "I never thought this would work," Harvard researcher Dr. John Allan Hobson... More »

'Exploding Head Syndrome' Is Real: Experts

Sufferers hear loud noises before or after sleep

(Newser) - OK, it doesn't involve one's head literally exploding, but "exploding head syndrome" is no joke, say experts. "It's a provocative and understudied phenomenon," says psychologist Brian Sharpless of Washington State University after a review of studies. Sufferers experience explosive-sounding noises during transitions between waking... More »

The Case for Not Sharing a Bed

Holly Allen thinks she'd be happier in her own twin

(Newser) - Holly Allen would beg to differ with the idea that the happiest couples sleep less than an inch apart . She recently found herself going to bed in her own guest room when her husband was sick, and despite the fact that the room only has a twin bed, she had... More »

Happy Couples Sleep Very, Very Close Together

As in, less than an inch apart: study

(Newser) - It may be better for your health to sleep in a separate bed than your partner—but a new study finds that the happiest couples are those who sleep close together. Very close together, as in less than an inch apart. A survey of 1,000 people found that those... More »

Napping Linked to Early Death: Study

But is napping the cause, or just a symptom? It's unclear

(Newser) - We all know how important it is to get enough sleep—but a new study suggests that daytime napping may actually increase your risk of an early death. Researchers looked at more than 16,000 British adults over a 13-year period, and found that those who slept for an hour... More »

Lack of Sleep Can Fry 25% of Brain Cells

Study of mice finds brain damage with prolonged sleep loss

(Newser) - A lack of shut-eye may not just leave you feeling groggy—it could seriously injure your brain. A new study of mice has found 25% of brain cells died off after prolonged sleep loss, meant to duplicate night shifts or long hours at the office—the first evidence of its... More »

Study: Men, Women Have Very Different Nightmares

But they're not always fear-filled: study

(Newser) - Men and women needn't be awake to experience the world differently, a study suggests: Even our bad dreams are quite different. A study of the dream journals of 572 people found that women's disturbing dreams tend to focus on social conflicts—friendships and romances gone south, for instance.... More »

You'll Perform Better If You Think You Slept Well

Sleep is subject to the placebo effect: study

(Newser) - Got a big day ahead? You're better off thinking you slept well, even if you didn't, a study suggests. Researchers told subjects a normal night of sleep consisted of about 20% to 25% REM sleep. Less than 20%, the subjects heard, meant a worse performance on cognitive tests,... More »

All-Nighters May Cause Brain Damage

Maybe get that studying done early

(Newser) - Another reason not to leave homework to the last minute: Pulling an all-nighter may cause brain damage, a study suggests. Researchers in Sweden studied 15 healthy men who were allowed one night of eight-hour sleep and one night of none at all, the National Monitor reports.The subjects provided blood... More »

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