Striking the perfect balance between too much and too little sleep is quite the gamble – with some shirking the necessary rest due to overwork and others never wanting to throw off their bedsheets.
Now, a recent scientific study has come out with a brand new finding as to how much an adult needs to sleep in order to function and keep the brain going optimally.
The official guidance from the NHS suggests that we need around six to nine hours of sleep each night, despite many thinking that they can function on less than that. However, the new research claimed that some adults could be sleeping too much.
The research claims that people who sleep less than 4.5 hours or more than 6.5 hours were found to be more at risk of cognitive decline. However, the quality of sleep might be more important.
So anywhere between the 4.5 and 6.5 hour mark is an optimal amount, provided it is quality sleep. Senior psychology lecturer Greg Elder told The Conversation that science isn’t quite sure why lack of sleep increases risk of cognitive decline.
Other factors are surely at play, scientists acknowledge. These could vary from poor health, physical activity and socioeconomic status. But it does come as a bit of a relief for those only manage to fit in few hours of quality sleep.
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