Research concludes that lack of sleep accelerates the aging process.
Conversely more sleep can slow down the aging process.
I guess that means that we can live longer if we sleep more; but the downside is that we'll spend those bonus years snoozing.
This research, I suspect, was used by Disney when they came up with the plots for both Snow White and Sleeping Beauty.
song: While You Were Sleeping • artist: Elvis Perkins