"For 12.45hrs Science says stay awake as long as you can and sleep right up to wake up call."
That is a great theory if ones body clock wasn't so out of whack!
Honestly I couldn't tell you if I'm fatigued as have been feeling like crap for so long, on so many different time zones. Deep night out, day flight back, only one sleepish, then one day off, followed by day flight to night.
