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We All Need A Good Nights Sleep

We All Need A Good Nights Sleep

A good night's sleep really does clear the mind: Scientists find the brain flushes itself of toxic waste while you are asleep.Sleep is required to clear the by-products of neural activity that build-up when people are awake - if they build up they cause diseases like Alzheimer's and other neurological diseases.

The researchers conclude the clean-up process is so energy intensive, it would hinder our thinking if done when we are awake - hence the need to sleep.

‘This study shows that the brain has different functional states when asleep and when awake,’ said lead researcher Dr Maiken Nedergaard, from the University of Rochester Medical Centre (URMC), in New York. 

‘In fact, the restorative nature of sleep appears to be the result of the active clearance of the by-products of neural activity that accumulate during wakefulness.’

The purpose of slumber has been debated for centuries, with Thomas Edison branding it ‘a criminal waste of time.’

And although practically every species needs to sleep, many have suggested it is a faulty evolutionary hang-up that makes us more vulnerable to predators.

The team found that unlike the rest of the body, which depends on the lymphatic system to drain away toxins, the brain has its own separate method of rubbish removal.

Scans on mice revealed the amount of energy used by the brain did not dramatically fall during sleep.

“So now you know make sure you get your 8 hours a night! Says Greengates Builders Merchants Accrington, Lancashire.

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