Do you think we'd know wether we were conscious if we never slept? Many animals only allow one half of their brain to sleep at a time, while the other half keeps an eye out for danger. The longest documented time a human has gone without sleep is 11 days. On the fourth day, Randy Gardner thought he was Paul Lowe winning the Rose Bowl. When technology allows us to 'videotape' our dreams, will we become voyeuristic cinema addicts? How does mugwort do it?? I'm too tired to fall asleep.