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This Map Shows How Many People Can't Sleep at Any Given Time

Having trouble sleeping? So are 313,038 other people who tweeted about it in the last 24 hours, according to a map that tracks tweets from around the globe about the struggle to get to the land of nod. The interactive Sleep Loss Map, created by the UK brand Hillarys (which sells, among other things, …

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Less Sleep in Middle Age Linked to Calcium

Getty Images By Anne HardingHealthy middle-aged people who get enough sleep each night are less likely to accumulate calcium deposits in their coronary arteries, a sign of heart disease, than their more sleep-deprived peers. In fact, an extra hour of sleep each night was associated with a 33% lower chance …

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Drug Used to Enhance Memory May Be Addictive

Getty Images By Anne HardingTUESDAY, March 17, 2009 — Modafinil, a narcolepsy drug used illicitly by an increasing number of people to enhance mental performance, could be addictive, according to a small study of 10 people who underwent high-tech brain scans. Modafinil is also prescribed to shift workers to help …

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One Key to a Better Life? Nap More

You know how great it feels to succumb to the lures of a nap. Turns out that daytime snoozing could be even more beneficial than you know. Sleep stints of 45 to 60 minutes can boost memory by fivefold, finds a new study published in the journal Neurobiology of Learning and Memory. Tell that to …

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Melatonin Side Effects

Jet lag always seems to get the best of me when I travel. I’ve tried prescription sleeping pills, well-timed cups of coffee, and even gradually adjusting my sleep schedule in the days leading up to a trip. But I hadn’t used melatonin to help regulate my sleep cycle, so when …

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Sleep Paralysis: Kendall Jenner Opens Up About Her Symptoms

In this Sunday’s episode of Keeping Up With the Kardashians, Kendall Jenner revealed that sometimes she wakes up and can’t move. “It’s the scariest thing in the entire world,” the 21-year-old told her sister Kim. “You literally think that you’re never going to be able to move again. You can’t do …

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Food Coma: Why Do You Sometimes Feel Sleepy After Eating?

The “food coma” is a well-known phenomenon. Who hasn’t taken a seat at the Thanksgiving table, eaten their weight in sweet potato casserole, and promptly fallen asleep in front of the TV? It seems the after-dinner snooze effect is real, but scientists still don’t know exactly why or how stuffing our …

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