7-9 hours. I imagine that will lessen when I get old.
I read this article awhile ago where this doctor had a theory that humans don't really need sleep and can function perfectly well without it.
Apparently we only need sleep because we have always slept and are programmed to believe we need it therefore our body starts to want it.
I don't know about that. I know I get super messed up when I haven't had a good night's sleep.