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Don't Blame Sleepiness After Turkey Dinner on Tryptophan

The amino acid has gotten a bad rap—but there's more to the story

(Newser) - Succumbing to Mr. Sandman after a hearty turkey dinner isn't tryptophan's fault. At least, not totally, reports the New York Times , which has done its due diligence in compiling plenty of other sources that back up its stop-blaming-tryptophan campaign. The amino acid found in turkey—and long the... More »

Why We Shouldn't Sleep Late on Weekends

Changes in sleep patterns on days off can lead to health problems, says study

(Newser) - Do you wake up early for work on weekdays? Then we're afraid researchers from the University of Pittsburgh have some bad news for you: You should be waking up early on weekends, too. UPI reports that a study published in the Journal of Clinical Endocrinology & Metabolism found changes... More »

Crocodiles May Be Watching You While They Sleep

Researchers say crocodiles do indeed sleep with one eye open

(Newser) - Bad news for Captain Hook: Crocodiles may be keeping an eye on humans even when the crocs are sleeping, according to new research published this week in the Journal of Experimental Biology . The BBC reports researchers in Australia monitored juvenile crocodiles using infrared cameras and determined they often slept with... More »

Maybe You Don't Need 8 Hours of Sleep After All

New research sheds light on sleeping patterns of our ancient ancestors

(Newser) - You've heard of the Paleo diet, but the next big thing in health may well be the Paleo sleep schedule. A UCLA researcher studied three hunter-gatherer and hunter-farmer groups—the Hadza in Tanzania, San in Namibia, and Tsimane in Bolivia, "who live roughly the same lifestyle humans did... More »

Going to Bed Late Could Be Making You Fat

Researchers link later bedtimes to increased BMI

(Newser) - Want to lower your chances of gaining weight? Then maybe cut out before Jimmy Fallon's opening monologue, according to a new study published in the October issue of Sleep. The New York Times reports researchers looking at more than 3,300 adolescents between 1994 and 2009 found a two-point... More »

Litigious Yankees Fan Won't Get $10M for Napping at Game

He says ESPN defamed him by showing him dozing

(Newser) - A 27-year-old New York Yankees fan who sued after ESPN cameras caught him napping during a game in April 2014 had his $10 million defamation lawsuit thrown out by a judge last month, the Smoking Gun reports. Not even a second-row seat and a matchup with the hated Boston Red... More »

Caffeine at Night Does More Than Keep You Up Late

Scientists find that espresso 3 hours before bedtime delays the circadian clock

(Newser) - It's no news flash that consuming caffeine close to bedtime can interfere with sleep. But scientists at the University of Colorado Boulder report in the journal Science Translational Medicine that caffeine has another physiological impact on sleep by delaying the body's natural surge in the production of the... More »

It's OK If Your Surgeon Is Short on Sleep

It makes no difference at all to complications rate, study says

(Newser) - Given the choice between a well-rested surgeon and one who's been up half the night, nobody in their right mind would choose the latter, but a new study says it doesn't seem to make any difference at all to their performance. Researchers looked at almost 40,000 patients... More »

'Sinister' Kids' Book Makes Children 'Conk Out'

'The Rabbit Who Wants to Fall Asleep' functions like hypnosis, doctor says

(Newser) - A new children's book isn't just written for kids—it's written to make them fall asleep, and fast. Author Carl-Johan Forssen Ehrlin, a Swedish behavioral psychologist, says he filled The Rabbit Who Wants to Fall Asleep with psychological reinforcement techniques to make young listeners doze off in... More »

5 Songs to Help You Fall Asleep

Who knew Mick Jagger could be so utterly relaxing?

(Newser) - We're not all air-traffic controllers , but most of us toss and turn and can't get to sleep at one time or another. For those restless nights when sleep is elusive, Paste put together a list of songs to help you find it, tunes with "a special kind... More »

15 Sad, Strange Things That Keep Us Up at Night

...but some are wonderful, too

(Newser) - What keeps Americans up at night? Thanks to a joint venture between a Knoxville public radio station and the University of Tennessee, that's being revealed, at least through an East Tennessee lens. The crowdsourcing project, dubbed Tenn Words, began in mid-May. Residents are asked to anonymously answer the question... More »

Women Sleep More, Wake Up Feeling Worse

The alarm-clock app Sleep Cycle delves into sleeping habits

(Newser) - For women who sleep long hours but wake up cursing the day, there's an app for that—or at least an app that corroborates your experience. The alarm-clock app Sleep Cycle gathered stats on one million users across 50 nations over nine months, and found that women aged 16... More »

What Your Sleepwalking Means for Your Kids

Sleep terrors appear to increase the chance of sleepwalking, too

(Newser) - Kids whose parents sleepwalked are more likely to do it themselves—and sleep terrors may be a precursor to sleepwalking as well, according to a new study out of Montreal published this week in the journal JAMA Pediatrics . Not that sleepwalking, also called somnambulism, is necessarily a big deal. "... More »

Wear Orange Glasses to Get Better Shut-Eye

Tinted eyewear, filters block blue light emitting from electronic devices: study

(Newser) - You may be tempted to stay up to check out all the new late-night TV hosts , but make sure you've got your orange glasses on first. Various studies and expert opinion suggest that special filters, light bulbs, and the aforementioned orange-tinted eyewear can help block melatonin-disrupting blue light emitted... More »

For More Sex, Get More Sleep

Every extra hour makes sex likelier, researchers say

(Newser) - Women who sleep more are a lot more likely to do other things in bed, according to a new study. Researchers from the University of Michigan's Sleep and Circadian Research Laboratory tracked 171 college-age women over 14 days and found that those who got more sleep had more—and... More »

Meet a Woman Who Needs Just 4 Hours of Sleep Per Night

Jenn Schwaner, 43, still finds days are too short

(Newser) - By normal human standards, " short sleepers " need hardly any shut-eye: They feel dandy after about four hours of sleep. The Science of Us speaks to Jenn Schwaner, a 43-year-old with a long resume as a court reporter who says she tends to get "about three or four... More »

How More Than 8 Hours of Sleep Could Be Bad for You

Study ties it to increased stroke risk

(Newser) - Sleeping more than eight hours a night? That may be too much of a good thing, because you're more likely to suffer a stroke, according to a study out of the University of Cambridge. Researchers analyzed the sleep patterns of nearly 10,000 people ages 42 to 81 in... More »

Experts Figure Out Exactly How Much Sleep You Need

Sorry, working-age adults: It's still 7-9 hours

(Newser) - Feeling so tired today? Perhaps last night's amount of shut-eye didn't jibe with the National Sleep Foundation's updated recommendations. In a newly published report in Sleep Health , the nonprofit foundation sets its objective: "to conduct a scientifically rigorous update to the [its] sleep duration recommendations,"... More »

6 Reasons Why You Should Sleep Naked

Ditch the pajamas and reap the benefits

(Newser) - Pack away the flannel pajamas: A handful of studies and surveys show sleeping naked could actually be good for you. Six reasons why you should consider it:
  1. You may like your partner more: A 2014 survey of Brits by Cotton USA (which promotes cotton products that likely include both pajamas
... More »

Key to Babies' New Memories: Naps

Researchers find babies who napped soon after an activity remembered it better

(Newser) - It's long been thought that napping is an important part of a baby's growth—both physically and mentally. Now new research in the Proceedings of the National Academy of Sciences suggests that naps help babies form new memories, and that when a nap directly follows a new activity... More »

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