SLEEP: Is it Dangerous to Oversleep?

In 2018 an ambitious global sleep study drew data from more than 10,000 participants. Among the findings was this interesting takeaway: both too little sleep and too much leaves has a negative impact on our brain function. Scientists suggest that actually, sticking to a consistent sleep schedule is more important than the duration of your sleep. Sleeping for roughly the same number of hours each night will improve your cognitive performance during the day and support good health, too. The study found that overall, 7-8 hours of sleep per night is optimum for brain function. People who slept less than 7 hours or more than 8 hours had an almost identical reduction in cognitive performance. So oversleeping — known as hypersomnia — is potentially just as problematic as undersleeping.