You've been seriously sleep-deprived over a period of multiple days, you expect more sleep-deprivation to come, and hurray! you finally have a serendipitous few hours to get some rest. Except that now, for some reason, you can't fall asleep. What to do about it (or instead of it)?
I actually cope OK with mild sleep deprivation, but more than a few nights with less than 5 hours of sleep, and I get nauseated, spacy and prone to fainting at the drop of a hat. I will be exhausted tonight, I know, but just now, when I have a bit of free time to recharge, I'm not sleepy in the least.
What can I plan to do between now and ~5-6PM that will maximize my ability to function overnight tonight and tomorrow through the day? I'd exercise, but I'm afraid that'll just make me wholesomely sleepy around 9 PM, which is exactly when I won't
have the opportunity to sleep. I've read this thread
and this one
, but am looking more for emergency hacks than for broad lifestyle changes, since I don't expect this situation to last for more than 1-2 weeks. What I'm doing won't be super demanding, but I do need to be able to stay upright, walk around as necessary, not throw up, not faint, and not fall asleep.