Oddly enough, I can pull a all-nighter without much trouble, beyond feeling like shit the next day. I tired to stay up for 48 hours once, on account of it, back when I was younger and a friend from LA was over... that was a huge mistake, as I felt pretty sick from the ordeal in the end.

There's a point in time where if I get tired enough, I'll I usually lose all feeling in me and end up staying up for about a full day, on average, which can be helpful sometimes when doing homework. The longest I've ever managed to stay up for was about 3 days straight, and that was in Hawaii with my cousin on a bet to see who could stay up the longest. I ended up losing that bet.

The thing is though, I"ll completely crash afterwards. Sleep for a good 10-12 hours after about 2 days of no sleep.

For me the most is 38 hours. Never had any strange things happen though, I was just ridiculously tired and felt like falling on the ground sleeping. I don't have very good tolerance for sleep deprivation either :(

I often pull all-nighters, I think my very first time pulling an all-night was when I got into the World of Warcraft beta. Didn't sleep for a day and half. I felt like shit though afterwards, and took me a couple of days to recover. Now though I recover just right away really. I'll stay awake for 30-40 hours, go to sleep for like 8 hours and wake up as if nothing had happened at all. The first 24 hours are really easy for me, after that though it becomes a game of me trying to stay active. I start to nod off to sleep but wake up as soon as my head drops, but after a certain amount of time has passed, like 28 hours, I end up getting like this second wind almost always and I'm no longer tired at all. I find it rather weird.

Not like I'm saying I don't believe you, but the world record for staying awake is 11 days. That seems... extraordinary to say the least. It must take incredible willpower.

One day, I've participated with my clan to a CS:S marathon contest (we won). It was a whole night gaming with only 30 minutes of pause. We drank so many red bulls to stay awake that I've been to sleep 76 hours later... Instead of falling straight in a coma, it had been super-hard to fall asleep... I was dead tired and, as I thought, once I was at the office, it all came at once. @_@''

My head and eyes begin to hurt and the sleep spell feels like large wave of hot water is puring over my head. Once I hit the bed, 12+ sleep guaranteed. I contracted insomnia somehow and went 2 weeks without sleep - having experienced this sleeping disorder, I really feel bad for perma-insomniacs.

The last time I didn't get enough sleep, very bad things happened, although it was combined with a lot of stress from Uni work and a lack of any breakfast for three consecutive days. You see, I had only been allowing myself about 4 hours per night for three night.

So there I was, in the computer lab walking to the laser printer to pick something up. The next second, I was sitting in a chair with people staring at me; apparently i'd had a fatigue-induced seizure and been flailing around on the floor. At first I thought nothing of it and tried ot get up but promptly fell back on my ass because I was so weak. I also had grazes on my head and wrists from the carpet as I was flailing.

Some nice guy there took me to the hospital, and they did a blood-test of some sort. They found nothing wrong so I just went home and had the rest of the day off. I didn't feel bad after a few hours, but I was worried at first that it might be some form of chronic epiliepsy, which would have effectively made me useless for anything in my life that involved machinery, driving, or crossing the street.

I also can't imagine what it must have looked like to my friends; it was so embarrassing.

One of my friends has the habit of taking caffeine pills when she needs to pull an all-nighter to study for the exams. What she told me was that once she took the pill, she could stay awake for a very long time without sleeping and quite awake when she took the exam. But once after the exam was over and she wanted to rest, she found it was tough for me to fall asleep. She was extremely exhausted, but couldn't fall asleep, and heart skipped every other beat or so, and even beating fast then slow from time to time. I was going to take a pill from her when I had to study for my last exam, but after hearing the side-effect of it, I decided not to.

Pulled an all nighter in grade 8, and haven't right since. Have horrible times sleeping, hard to get to sleep, always feelign tired....might not be from that though, but whatever.

I think my body works in weird ways with sleep. First off, when I Sleep, I can sleep pretty much anywhere and not remember any dreams (In fact It feels like I go to sleep and the next moment I'm waking up). Secondly I am a Dead SLeeper. A nuclear bomb can go of and I won't be affected.

I believe that I can run for a very long time without sleep as long as I have something my mind can concentrate on. If I don't (Even if I did get a lot of sleep recently) then I go into sleep mode no matter what.

As long as I remain active, I can usually sluff off an all-nighter or a night where I get very little sleep. A lot of times, my 1230-2PM Macroeconomics class is where my tiredness catches up to me, and I spend the majority of it nodding off.

I cant see how it's possible for some of you to stay up so long. How do you keep going without any dreaming or sleeping going on? Your body and mind cant recharge if you never sleep.

I've been up past 24 hours in the past and I just drop flat. I will fall forward and sleep. Then when I wake up I feel exhausted and drained. Even if I go back to sleep the energy drain remains. Only after a few days do I feel normal again.

I'm good with 3-5 hours of sleep a day.

Some people condition themselves though.

Geez... Stupid question but how do you condition yourself?

I'm not sure about others, but if I sleep 5 hours each day for about two weeks, I tend to get used to it and no longer have trouble waking up in the morning. During the weekends though, I tend to sleep longer than that.

Generally you'd want to sleep for the same amount of hours and time of sleep (Like what time you go to sleep and get up) for about 2-3 weeks. after that, your body will be used to sleeping that way and it will be generally very easy, at times almost 'automatic' for you to run on low sleep, or odd hours.

There are no (That I know of) quick ways to have your body memorize sleep patterns, but a couple cups of coffie or soda can help you break off a previous sleep pattern as well.

You stay awake. *rimshot*

So, if someone's had a very off pattern for say, years, then what? How much more longer do they need to get used to a sleeping pattern?

Just want to interject that I have not slept since I got up at 9am on Thursday. It is currently 3:39 AM saturday morning.
No hallucinations yet.
Although, I feel too tired to go to sleep. ;_;

Why are you staying awake so long?

o_o Dude, go get some sleep or something! Take a sleeping pill if you have to!

I was up for a day and half once and good grief I was falling alseep all over the place, giggling at anything, talking random nonesense. I do poorly when I have little sleep. It also affects my grades too, so I try not to stay up too late. :|

Well, you eventually start to hallucinate.
I find operating on little to no sleep is a problem for me. The world starts to get all spinny and I make very stupid decisions I wouldn't usually make.

I find it takes me about 2 or 3 days to fully recover from sleep deprivation.

I usually just drift in and out of sleep during class the next day. Getting up at 5 every morning sucks. :(

Basically, the night before I posted that, I had to stay up to work on several school projects that were due on friday.

And lucky for me, I managed to sleep until 230pm today, so it is all good.

Me and the band from school went to Banff in Alberta for a concert, and we hardly slept for about 3 days, only about 5 hours total I think. Anyways, one on my friends who was sleeping im our room had taken about 3 more energy drinks than was the healthy amount and he was very hyper for about 15 minutes and then he started acting like a fool so he had to stay in the hotel bathroom by himself for about 15 more minutes. He overdosed pretty bad.