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sleep loss

child asleep

Mind

Memory special: What happens to your memories while you sleep?

As you slumber, the brain is a whir of activity sorting and storing your memories. How does it know which to choose, and how can you game the system?

Features

crying baby

Humans

You should soothe babies who wake at night – it speeds sleep training

News

One bad night’s sleep can make you put on fat and lose muscle mass

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One bad night’s sleep can make you put on fat and lose muscle mass

News

Michel Siffre in cave

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This man spent months alone underground – and it warped his mind

Features

My weekend in the desert trying to experience dream telepathy

Humans

My weekend in the desert trying to experience dream telepathy

News

Heroin paraphenalia

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Heroin users’ brains hint at a new treatment for narcolepsy

News

Seals only sleep with half their brain when they're out at sea

Life

Seals only sleep with half their brain when they're out at sea

News

An oddly coloured landscape

Humans

The dreams you forget are the most important for learning

News

Think you're fully alert? You can't always tell if you're tired

Humans

Think you're fully alert? You can't always tell if you're tired

News

A person in bed with a mobile phone

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Getting just 6 hours of sleep is linked to mental health issues

You might think you can get by on 5 or 6 hours’ sleep a night, but people who get less than 7 hours are more likely to have mood or mental health problems

News

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Struggle to get up in the morning? You’re at risk of early death

News

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One bad night’s sleep may increase levels of Alzheimer’s protein

News

Life

Neanderthals ambushed cave bears as they awoke from hibernation

News

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Calorie restriction may extend lifespan by changing your sleep

News

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