World s largest sleep study shows too much shut eye can be bad for your brain

Preliminary results from the worlds largest sleep study have shown that people who sleep on average between 7 to 8 hours per night performed better cognitively than those who slept less, or more, than this amount. Neuroscientists from Western Universitys renowned Brain and Mind Institute released their findings today in the highimpact journal, SLEEP. For more information, please visit