Several studies have reported the same results, that both long and short sleep durations are correlated with poor health and shortened lifespan, with most reporting a greater risk associated with long sleep.
As he sits in his CA office of his startup NeuroVigil, Low holds his miniature iBrain device. The size of two pennies, the miniature iBrain marks what scientists see as a revolution in the study of sleep
While leading a meditation class, we'll see people nodding off to sleep. Which is one of the reasons why Zen teachers whack their students with a thin bamboo stick -- it doesn't hurt but it certainly wakes them up!