I know a lot of nerds are famous for staying up late, being night owls, etc. Some manage to make very strange sleep schedules that allow them a strange life, or a different way to handle things, etc.
Sometimes I get in a mood where I don't want to sleep until I'm fully exhausted so I stay up far, far too late.
When I was enrolled in school full time, I would attend school from 8am-4pm, then sleep from 6pm-10pm. Goof off/homework from 10pm to 2am, then sleep from 2am-7am.
Splitting your sleep into two blocks like this is called "biphasic sleep". I did not have a social life.
Currently I try to sleep from 10pm to 6am. 8 hours. Sometimes I make it, sometimes I don't. Usually I start "winding down" at 9pm.
Some aspire to the "uberman" sleep schedule which involves training your body to immediately drop to REM sleep, and having a 20 minute nap out of every 4 hour cycle. Total time spent sleeping: 2 hours per day. Lots of people try it, few can actually manage it.
Good sleep is important. How do YOU sleep, fishies? Do you have a regular schedule schedule you adhere to? Do you practice sleep hygiene?