On the sleep part, I actually feel better sleeping biphasically, 3 or 4.5 hrs at night with a 1.5 hr nap during the day, than I do getting a full 7-8 hrs all at once. Sleeping for more than 6 hrs or so generally makes me feel groggy, unmotivated, and kind of depressed for most of the day, even if I chug down half a pot of coffee the grogginess doesn't go away. I just don't get this problem with periods of less sleep scheduled 2-3 times a day. Waking up and actually forcing myself out of bed still sucks though
I do tend to feel more vibrant throughout the day with that sleeping schedule (although I definitely oversleep quite a bit on the weekend, but don't really care on those two days as I'm lazy on the weekends anyhow), but if I skimp out on napping for miss more than a little sleep, I'll get really worn out really quickly. Kind of a double-edged sword I suppose.