Polyphasic sleep is sleeping in multiple phases (get it?). Rather than sleeping in one 8... 7.. 6 hour block a night, you split your sleep up across the day, usually incorporating napping. http://polyphasicsleep.info/ Unusual Educational Worthwhile Long-term 172 1 1 Try Polyphasic Sleep Sleep tired nap polyphasic sleeping bed napping Thu Aug 21 09:15:09 UTC 2008 10