[stordoff]

I once worked for 100 hours solid (only breaks were to use the loo or fetch food; total waking time was about 110 hours) and once I got past the hours 24-40 I felt fine most of the time - no hallucinations or similar, didn't feel particularly sleepy or experience micro-sleeps, and the quality of the work was OK (not my best by any stretch, but passable).

The wierd part came when I hit the deadline for the project (10am) and had to submit it - pretty much as soon as I stopped working, I felt _awful_, barely coherent, and had to take a friend with me to submission as I wasn't sure I could find the venue despite going there five plus times a week for a couple of years. It was a pretty shocking experience to go from working OK to barely functional in a matter of minutes. Not an experience I'm in any rush to repeat either! Despite that, I ended up staying awake for the rest of the day and played Risk with friends that evening, because I just couldn't get to sleep.