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Why we need a good night’s sleep


Friday, April 3rd, 2009 Why we need a good night’s sleep

Scientists warn of the dangers of sleepless nights after discovering how brain clears out day’s mental rubbish

To sleep, perchance to dream, said Hamlet. Now scientists have shown that sleep is more about getting rid of the previous day’s mental rubbish than it is about dreaming.

A study into slumber has found that the nerve connections built up in the brain during a busy day are pruned back during the night in an attempt to keep the mind from overloading on junk information.

The findings lend support to the idea that a good night’s sleep is essential for consolidating important memories of the previous day and getting rid of things that would otherwise clog up the system.

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