I slept 5.5 hours and feel better than when I sleep 6.5 hours!

Sleep experiment test 1 - I slept for 5 1/2 hours last night and woke up feeling refreshed compared to when I normally sleep about 6 (and some change) hours. See my previous post - http://casualiscool.com/2009/05/increase-productivity-by-learning-how-to-sleep/ I figure if sleep cycles are roughly 90min. I slept and woke up right at the end of my sleep cycle. I [...]