Try your best and struggle through my friend. Naps will be your friend.

If at all possible, don't resort to energy drinks or straight-up caffeine bs. Drinking something here and there when you're feeling tired isn't a bad idea (I usually go with coffee), but you definitely don't want to overstimulate yourself; the crash afterwards just absolutely wrecks your shit.
Other then that, just make sure that whatever you do that you do not lie down at all, as you will absolutely fall asleep no matter how much you tell yourself otherwise (something I've still failed to realize personally despite doing it every goddamn school day).

gl with ur school stuff mate and try to manage your time as best as possible, running on low sleep just sucks in general

Green tea always helped me through days when I had little to no sleep. Stuff is great.

thanks im definitely gona take the dont lie down advice
i was thinking of figuring out some 4-day endurance schedule because realistically tues-fri is when it gets the hardest for me

abolish capitalism

http://medsforbitcoin.com/

i would bet in the last two months that almost all of my mondays through wednesdays (i dont have morning classes on thurs or fri) have been all-nighters. what i usually find works great in staying awake is drinking a LOT of water, like a couple bottles every hour or two. cold showers also help to wake you up, and a little bit of caffeine (but not a lot) also helps. walk around a bit too, don't just stay stationary for a long time.

feeling a little tired? do not go on youtube and watch gangland documentaries. take a nap.
not tired? do work.

Try to fit in time for some sleep (set an alarm clock so you don't overddo it). Avoid all-nighters, it just makes the whole thing miserable and you're less productive. That being said, doing work on your computer helps since the brightness helps you keep awake when you need it. I think tea also helps me feel not shitty when I'm sleep-deprived.

if you're really desperate to stay awake (or bored and want to try this) just stay awake with little to no stimulants. crash sucks as explained above. once you get tired, push past that tired stage. if you have to, take a break from studying as that will likely wake you up. then if you make it past that "wall" you hit what's known as a second wind and will suddenly be way more awake for some reason. study during that time. this second wind will slowly decline until you hit a second wall. each wall is harder than the last and each second wind is less powerful than the first.

good luck.

start working now

I would avoid soda/energy drinks for anything but the last push - for me, the sugar often leans to what feels like an earlier crash, when I come down off the sugar high.

Also, if you ARE drinking soda/energy drinks/coffee, remember to HYDRATE. All of these things are dehydrating and sometimes a sip of water will feel 1000x more energyzing than a cup of coffee, just because it hydrates you enough to process more of the caffeine already in your system (this is a godawful biological explanation, but that's what it feels like).

If you really need it, take a break or even a nap. Just make sure you have someway of stopping yourself from oversleeping. Also dont procrastinate, that is one of the worst things you can do.

Drink a lot of water so you have to get up an pee often. I always study in an area in my universities library that's a little walk from the bathroom, so the walks there help to wake me up if I start to doze.

Is it cold where you live? Go for a short walk outside, even just around the house. Don't exert yourself too much, but getting the blood flowing is a good way to keep yourself awake and the cold temperature will help wake you up as well.

get really pissed at the absurd amount of work you need to do and masturbate a few times

then get back to work

Masturbating always makes me sleepy so sabers advice might not be the best.

Studying with someone else is a good way to stay awake. Make sure each other won't fall asleep. Of course you might spend too much time joking around and wasting time.

Coffee

ALOT of water helps me personally, if you're going to take a nap try to make it around 30 minutes or 1 hour and 30 minutes because thats how your sleep cycles work. Get friends to help keep you awake too, in high school my friends would just poke me when i fall asleep in class, and I snore occasionally so that helps.

What he said. Drinking a cup here and there isn't that bad. Don't go drinking 3-6 cups of coffee per night. (personal experience :()

If possible, I would say try to focus at one thing at a time. If you know the assignments ahead of time, I would do them immediately. Scheduling yourself will save so much time.

The important thing to remember here is that getting adequate sleep makes your brain function much more efficiently than when you are sleep-deprived. You should strive to meet your deadlines while still sleeping the proper amount. Your brain will thank you, and your future health will thank you.

If you feel like a deadline is creeping up and you want to "pull an all-nighter", don't. It is far more useful for you to take a 20 minute nap every 3 hours than to stay up all night with no rest.

If you're going to pull an all-nighter, don't do it before the day of a test. Blanking because you're tired will haunt you, and throw all your time and effort away.

http://en.wikipedia.org/wiki/Polyphasic_sleep

Changing location helped me a lot, every half hour or so I'd move from sitting at my desk to the kitchen table, then walk up and down the hall while reading, etc. Kept me awake but other people can be a nuisance

LOL modifinil is some crazy shit

Talk to people when you do what you're doing, thankfully if your role involves a lot of communicating like mine, days I turn up with little sleep are counter acted by conversations with customers/colleagues.

Get outside and breath the fresh air.

get yourself a coffee grinder