hate to sound like an old "big mama" here and scare everybody but Sleep is important for your health
and since most of us are infront of a computer all day we need to take care of our health even better.
sleeping less then 6-7 hours on a perm basis can cause in the near future illnesses such as:
depression, heart disease, some memory loss and on some cases even psychiatric disorders.
Read This if you want to know more:
http://www.webmd.com/sleep-disorders...ep-more-better
http://www.sleep-deprivation.com/art...leep/index.php
again sorry for sounding like an old nag but our health should be our top priority not our jobs