how long can a human be awake?
358995
About four or five days. After that, he starts to hallucinate if forced to stay awake and if not forced to stay awake he will just fall asleep.
451344
The brain can relatively live for about an hour without oxygen before it completely shuts off, thats why many EMP's and emergency response people talk aobut the "golden hour", that a person who gets to the hospital within an hour is more likely to live.
751429
This depends on each person. I only want/need eight hours. Mrs. Thatcher (and others) famously needed only four hours. I knew a girl who regularly had twenty-two hours. None of these people thought they were getting "too much" sleep. They simply slept the amount they felt they needed.\nWithout medication and assuming good health, I would think the body naturally wakes when it has had sufficient sleep.
855891
There is no answer to your trick question.  Some students can study for 1 hour, others for 24 hours.  Those that have "it", get "it".  Those that don't, just read a lot.\n\nHow many hours should a blind person stare at book in order for them to learn to read?
484430
well i have been in health care for about 8 years and you r suppose to wait at least 3-4 hours before going to sleep and you are to be woke up either by someone or your alarm its better if you have someone their so if something goes wrong and you don't wake up or have someone call you ever hour and a half
85308
Various biological factors help determine how long people can last without sleeping. Some people can go for longer periods of time than others. \n\nNotorious cases of record-setters include disc jockey Peter Tripp who in 1959 stayed up for more than eight days as a promotional stunt. After a few days, he began to hallucinate, seeing kittens, mice, and cobwebs. He also became paranoid, insisting that an electrician had dropped a hot electrode into his shoe.\n\nSix years later, high school student Randy Gardner attempted to break the Guinness Book of World Records for the longest time awake -- 260 hours. And after 11 days without sleep he suffered no hallucinations or paranoia and no psychotic symptoms.\n\nSome people with severe insomnia claim to have gone for several weeks without sleep. Though ususally in cases like this, even though they appear awake, their brain actually goes into a light sleep-like state.
41461
Tons of people are awake. but you will be asleep before they all get a chance to answer your question about being awake :)
815662
At one number per second, it would take you 11, 570,000 days, or about 31709 years.\n\neven at 10 per second you would need 3170 years, so, being a mere human, you couldn't do it.\n\nWill
508796
it depends on the situation and your physical condition at the certain time but on normal condition and circumstance, i'd say 2 - 3 minutes :-)
795737
Strange question...\nAbout 1 hour I reckon, same as a drink would.
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.
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.
889753
yes you can but it sucks.........your brain re charges after 4 hours of sleep, the other 4 are for your body, but your body can function on a half charge, so if you sleep roughly 4 hours a night that's all you really need to keep from getting nerve disorders and shit like that witch will kill you, Ive heard that a person will die if they go more than 4 days straight with out sleeping. Also, I dint know how long they would go but I have heard the Nazi's would force Jewish prisoners to work until they died from exhaustion.  \n\nI myself have conditioned myself to the point that I could stay awake while driving after 4 and a half hours sleep each night for a week, but the tax it in poses on the body is not cool. After about a year and a half I became allergic to the sun, doc. said that it was because one of my origins was increasing the out put of some long named chemical that I cant pronounce or come close to spelling, all thanks to a lack of sleep. my doc. recommended at least 6 hours of sleep each night, I sleep 6-7 hours and stay healthy
1053191
No\nVital bodily processes need at least 5 hours average.
367091
Most of the people keep thinking that human being needs eight hours per day of sleep time. New researches have found that the perfect time to get really full filled is 7 hours. (Tibetans monks sleep just 4). So, let's say you want to wake up at 6 a.m. to get jogging and hour back home take a shower and get ready for being at the office at 9 a.m. The best time you can go to bed is 11 p.m.
606189
It's too late for you to be awake.
367620
The mind requires time to refresh.  Nine hours for a school aged child gives the body and the mind enough time to relax.  I think that everyone should get at least that much rest.  Try it for a week yourself, you'll be amazed at how much better you feel during the day!