Went to bed early last night. This is something that I've been needing to do for most of this week, and (for various reasons) something that hasn't happened. So I got quite a bit of sleep - which has, of course, completely weirded out my metabolism/circadian rhythms/body. I feel much more rested and relaxed, but also achy and a lot less focused. After so much rest, my body - perversely - wants more rest.
Fortunately, it's shaping up to be a quiet morning.