I agree, and I wish I could get more of it. I have a sneaking suspicion that I would improve a lot faster with more sleep.
I believe growth hormone is released during sleep, and have even read bits & pieces here and there that someting as short as a 30 minute nap in the afternoon can induce GH release, amongst other beneficial mental and physiological effects.
Sleep as much as you can and take naps in the afternoon whenever possible.