I've always been intrigued by the stories about guys like Thomas Edison (oops, I guess the stories about Edison's sleep patterns are just legend) who slept only a few hours a day in short naps. I don't know if there's much scientific research on the subject, but I just read the journal of a guy who set out to try it for 30 days. He started taking six 30-minute naps per day. He's pleased with the results and said he doesn't plan on going back to normal sleep. He's gone almost 90 days now. The first week is pretty hard, but after that your body is trained to enter the all-important REM sleep almost as soon as you fall asleep. Interesting read.

(via Digg)