Sleep is wonderful, but there is so much else (jitsu, Mandarin, student politics, investing, writing code, drawing, my research, reading, dancing, thinking, writing fiction, writing for my website, etc.) and it's all so wonderful too, so sleeping's actually quite a low priority for me. A bit like house cleaning actually - it has to be done, but I don't want to spend more time on it than I have to. That's the goal then: To sleep as little as is sustainably possible.
This might sound absurd, like it's not worth the effort. What would you really gain by going from 8 hours sleep a night to 6? It's only 2 hours difference, and it sounds like a lot of work! But the maths is convincing. Sleeping 6 hours a night instead of 8 equates to 730 more conscious hours a year. Which is 30 full 24-hour days awake, and if you take off the 8 hours you used to spend sleeping and the 3-4+ hours you spend every day cooking, cleaning, picking up groceries, all the fixed costs of life, then those 730 hours work out to be more than 60 days. It might not sound like much, but cutting 2 hours of sleep means you get 14 months every single year, and whether you use it for work or play, that's worth having!
Now, come September, some friends and I are going to try polyphasic sleep in a serious, concerted and quite scientific fashion. For now I'm just playing around and working out how to sustainably sleep as little as possible while not cramping my social life or affecting anything else in a negative way. I'm not perfect, but this relatively unordered list of bullets seems to work pretty well when I keep to it:
That's it, that's all I've got from my own personal experience so far, but it's helped and I definitely intend to keep pushing it. An 18 month year anyone?