[ QUOTE ]
you will not get enough deep sleep, which is the part that you need the most. So when you're awake you'll still be tired and wont be able to do as much that you want. You'll become grumpy too.

Just be human, and take those 7-8 hours a night.

[/ QUOTE ]

I've heard that the National Foundation for Sleep is funded mainly by sleeping pill companies, which is why 8 hours a day is the recommended amount of sleep.

I've found, that unless I'm run down, 5 to 5.5 hours is all I need.