We all know that sleeping is the most important factor in recovering the tired body and mind; and to live healthy, we should sleep for a right amount of time, 7-8 hours daily. But does that mean that longer hours of sleep will recover the body more?
Well, a research team in Cambridge University, after being carried out on 9,600 people for Nine and half years, proved that longer sleeping hours increased the risk of cerebral infarction by 46%. We still need more research to clarify if sleeping for long time has an unknown mechanism that affects cerebral infarction or if a cerebral infarction related factor increases the time of sleep.
That said, I would simply advise that we rather not sleep longer than 7-8 hours a day because someone who sleeps too long is not healthy.