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Brain cells that regulate wakefulness may become overactive with age
Brain cells that promote wakefulness fire too much in older mice, which may explain why many people find it harder to sleep as we get older
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Getting enough sleep may lower the amount of calories you eat
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Humans
Unknown voices spark more brain activity in sleep than familiar ones
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Mind
Interrupting sleep after a few minutes can boost creativity
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Night-shift workers who eat only in the day may cut diabetes risk
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Life
Circadian clock made from scratch to probe how biological rhythms work
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How long can you go without sleep?
Humans
University students with morning lectures tend to have lower grades
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Worrying about bad jet lag could actually make your jet lag worse
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Why can鈥檛 we stay awake indefinitely? Science with Sam explains
Sleep is clearly extremely important, but what鈥檚 going on in our brains while we鈥檙e out of it? Why can鈥檛 we stay awake all the time? And how can we make sure we鈥檙e getting enough? Let Science with Sam explain
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Science with Sam: Why can鈥檛 we stay awake indefinitely?
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Why do we yawn?
Life
Octopuses may be able to dream and change colour when sleeping
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Technology
People can answer questions about their dreams without waking up
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