none of this stuff is unique. people can survive a week with 4 hours of sleep, while performing physical labor 20+ hours per day...all without dying.
http://en.wikipedia.org/wiki/United_States_Navy_SEAL_selecti...
how about 260 hours with no sleep?
http://en.wikipedia.org/wiki/Randy_Gardner_%28record_holder%...
every time stuff like this floats to HN's front page, i wonder where this community is heading.
[EDIT] Seals can sleep up to 4 hours in a 5.5 day period.