Interestingly there is a whole armada of things keeping us under pressure: you got to be more productive, faster, better organized, and so on. The computer has not only enhanced our productivity: ubiquitous computing also means there will be no excuse to be unproductive (except when you »deserved« a break)?
There are already many people working almost round the hour – from early morning when they wake up to late night when they fall asleep. For those there is now »aid« available:
Glen Rhodes explains how to reduce the daily amount of sleep needed to 4.5 hours:
Typically, I sleep 3 hours a night, and nap for 90 minutes in the evening. That’s a total of 4.5 hours, and I am always alert, always awake and always feel rested and refreshed.
Update: There is a Wikipedia page about »polyphasic sleep«.
Hooray! I’d like to quote Alex Albrecht from diggnation.com: »We live in desperate times, Dude!«.