News for hackers. Stuff that matters.
Re:Poll: How many hours of sleep do you get each day? by icey on Friday October 10, 2008 @01:25PM (#329042)
I've noticed the 1.5 hour interval thing as well; and also switch between a 6 hour sleep schedule and a 7.5 hour sleep schedule, depending on when I actually get tired.
Re:Poll: How many hours of sleep do you get each day? by lehmannro on Friday October 10, 2008 @02:27PM (#329106)
And indeed the average sleep cycle is about 1.5 hours long. See http://www.boston.com/bostonglobe/ideas/naps/

Personally I like to get up early (around 6am), go to bed when done for the day and nap when tired.