How long can I stay awake without causing illness or injury?
487583
U need at least 4 hours sleep. Your body needs to rest so it can stay healthy. U will probably go crazy before your body will give out lol.. Sleep is important!! Stop to rest and close your eyes!
970101
I think answer number 1 is correct. However, it probably depends on the individual. Some people wouldn't last more than 24 to 36 hours.
352684
has to be around 28 hours , 30 without any sleep so i could fall asleep sitting
911769
No, it's not "ok".  You're not giving your body the rest it needs to recuperate and heal and eventually you will have sleep deprivation.  The average person needs at least 8 hours a night...some a little more.  Sleep deprivation can cause a lot of health problems, so get some more shut eye for your own sake.  Now go take a nap!  Godloveya.
1088076
8 hours is recommended, but it really depends on each person. Some people can function properly with 5-6 hours and some can not. You should try sleeping less than 8 hours and see how much sleep you need.
714915
Caffiene will keep you alert when feeling tired how ever  you will need take more and more to fight the effects of tiredness, and it is also addictive. Another side effect will be a sudden crash if you dont maintian the levels in your body. One minute you will be awake and alert the next you will find that you have no energy and feel reallly tired. You should be aware that by working long hours at full alertness is detremental to you health over long periods of time. It disturbs your sleep pattern and causes you to become less alert. \n\nThere is also the practical issue of determining the level of fatigue at which performance poses a real risk. How do we set standards for fatigue? How much fatigue is too much? We recently compared the effects of sleep deprivation and alcohol intoxication and found that after 17-19 hours without sleep, starting from waking at about 0600 hours, individuals' performance was equivalent to or worse than at 0.05% blood alcohol concentration.15 In other words, commonly experienced levels of sleep deprivation—one extended day for a well rested individual—had a profound effect on performance. At around 2230-2430, well before reaching the circadian trough in alertness, performance levels were low enough to be considered incompatible with safe driving in many countries.\n\nThats an extract from the link below. I hope you work it worth the cost to you and your health.
1010365
Of course, you already mentioned caffeine.  A catnap or two might help you keep from crashing before the day is out - taking a short 15 or 20  minute rest once or twice in the day.  Any longer and you'll sleep too deeply and won't be able to get up again.\n\nLots of walking around in the fresh air might help, and taking as many breaks as possible from monotonous tasks to move around.\n\nStay as active and busy as possible.
23641
Yes he will be okay. I had a concussion when I was younger and I had a knot on my head the size of a tennis ball. I had to stay awake and under observation at home for at least 24 hours with no sleep because it was a possibility that I could have died if I would've fallen asleep. After the observation period I made it and I was fine after that. If you want more details or more info, you can IM me. My screen name is alicias06.
1155426
get lots of sleep, like at least 8-10 hours
682243
The record is ten days.  Subjects began to hallucinate after three days and eventually became psychotic.  After ten days they slept for an average of 9 hours (but then went to sleep again a few hours later).  It took three days to recover.
299376
No-well I guess if it's a REALLY strong one you could sleep for awhile but not 3 days.  Everyboey reacts differently to med's if I take a benedryl I"m out in 1/2 hour if my hubby does he is amped.  It all depends on your body.\nBe careful
1079221
spectators also need rest. i cant keep awaken in night continuosly for three-four days
643723
I need around 6-8 hours sleep.  Anything less than 5 hrs and you can bet I'd be dangerously cranky and would be snapping at everyone the rest of the day, plus, I won't be up to any "thinking" tasks such as heavy analyzing and all that. I'd be on auto-pilot mode then until I get enough sleep. I usually wake up for bathroom breaks but I try not to turn on the lights (autopilot mode again) so that I can go right back to sleep without being woken up too much.
307633
Most people recommend at least 7 1/2  to 8 hours.  It depends also how old you are, sometimes older people get by with less sleep.  Look at it this way, if you get a certain amount of sleep then wake up, and you still feel like crap, you need more sleep.  Most important too is if you wake up in the middle of the night, DON'T look at the clock, it will psyche you out and you won't fall back asleep as fast.  Also try to go to to bed and wake up at the same time every day, or at least don't vary the sleep/wake up times by more than 2 hours (for example if you normally get up at 7am, don't sleep in longer than 9am, regardless of the time you went to bed), that's the maximum difference your body can take. Also don't drink ANYTHING closer than 3 hours before you hit the sack.
54845
This is an interesting one which I think depends on what we THINK we need. Most folk in UK seem to generally consider we need 8 hours or thereabouts. I joined a group once which stated that if you needed more than 4 hours there was something the matter with you. This struck me as quite ridiculous on first hearing it but I gradually realised that our perception and conditioning are an enormous influence. I now KNOW I can manage quite well with 5 or 4 hours but have the capacity to sleep for 12 hours too. I am truly blessed to be able to drop off almost the minute my head touches the pillow.
560321
Breathing is great.  Inhale four counts, hold seven counts, exhale eight counts.  Repeat up to eight times.\n\nDrink plenty of water during the day.  If you don't get enough water, your liver can't function properly and will keep you awake between 1 and 3 AM.  If you have acid reflux or chest congestion and don't realize it, you may unconsciously be keeping yourself awake.  Don't eat too much or too close to bedtime.\n\nAvoid foods with MSG or nitrites/nitrates or BHA/BHT.  These can trigger migraines and can cause insomnia.\n\nDo something to get tired during the day.  Exercise (even just walking 20 minutes a day) helps increase endorphins (which make you feel good) and help regulate sleep.\n\nTurn off the computer and dim the lights an hour or so before bed.  Your body needs it to be at least moderately dark to get sleepy.\n\nThere's something about taking a shower.  I think you're supposed to alternate hot and cold water, but I can't remember which one you are supposed to end with.  Something about that is supposed to make you sleepy.\n\nWarm milk or "Sleepy Time" tea by Celestial Seasonings might help you relax.  Make sure you are getting enough calcium and magnesium before bed time.  Taking them about an hour after your evening meal (if you take them sooner they could interfere with digestion) may help you sleep.\n\nAlso track your cycle and note when you have sleep disturbances.  If you are over-estrogenic and don't have enough progesterone that could cause sleeplessness.\n\nJournaling might help.  Go ahead and write down all those thoughts that won't let you rest.  If you have them written down, maybe your mind will let them go for a while.\n\nPrayer is also really good. Give your anxieties to Someone you can trust.\n\nIt's better to lie in bed and relax than to get up and do anything that stimulates your brain further.\n\nOh!  While you are lying in bed, start with your toes.  Tell them to relax.  Work your way up your body all the way to your scalp.  Tell yourself to relax and your body will relax.  Great way to fall asleep.
750828
Stay active. Do something that requires your full attention such as cleaning, exersizing, dancing, talking. Keep the lights on and the music on a upbeat sing-a-longable (I know thats not a real word!) channel! Drinking caffiene will also keep you awake but it isnt good for your body.