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en.wikipedia.org/wiki/Randy_Gardner_(record_holder)

Randy Gardner (born 1949) is the holder of the scientifically documented record for the longest a human has intentionally gone without sleep not using stimulants of any kind. In 1964, Gardner, a high school student in San Diego, California, stayed awake for 264.4 hours (11 days 24 minutes). ... "I wanted to prove that bad things didn't happen if you went without sleep," ...

en.wikipedia.org/wiki/Sleep_deprivation

Sleep deprivation is the condition of not having enough sleep; it can be either chronic or acute. ... Long-term total sleep deprivation has caused death in lab animals. .... a few seconds and happen most frequently when a person is trying to stay awake when they are feeling sleepy. ...... "How Much Sleep Do You Really Need?

www.scientificamerican.com/article/how-long-can-humans-stay

J. Christian Gillin, a professor of psychiatry at the University of California, San Diego, conducts research on sleep, chronobiology and mood disorders.

www.huffingtonpost.com/2012/08/13/human-body-limits-survival_n_1773167.html

Aug 13, 2012 ... For example, how long can you stay awake before you die? How high in altitude can you climb before suffocating? How much acceleration can ...

www.sleepio.com/articles/sleep-science/how-long-can-you-go-without-sleep

What's the longest you have gone without sleep? ... Thus, we cannot conclude that 6 months really is how long you can go without sleep before you die. ... Randy Gardner set out to break the world record for the longest time spent awake .

www.slate.com/articles/news_and_politics/explainer/2009/05/can_you_die_from_lack_of_sleep.html

May 11, 2009 ... It's possible that given enough time, sleep deprivation can kill you. While no human being is known to have died from staying awake, animal research ... and paranoia take hold long before the more severe physical symptoms.

www.everydayhealth.com/conditions/what-happens-when-you-dont-sleep-days

Feb 22, 2016 ... Ever wonder how long you can go without sleep? Find out what's happening to you physically and mentally as you wrestle to stay awake.

www.bbc.com/future/story/20150220-how-long-can-we-stay-awake

Feb 23, 2015 ... Live to 78, and you may have spent around 25 years asleep. ... to ask: how long can we stay awake – and what are the consequences ... known to have summarily caused anyone to die (although they will still suffer horribly).

io9.gizmodo.com/can-you-die-from-sleep-deprivation-1684235719

Feb 6, 2015 ... Yes, total sleep deprivation can almost certainly kill you. ... Before we get to the experimental and hypothetical ramifications of total ... of poor sleep hygiene, the long-term effects of which can also be deadly. .... and after three nights, people are having dreams while fairly awake, which is a form of psychosis.

www.bluelight.org/vb/threads/497583-How-long-can-a-person-stay-awake-before-they-go-mad

But there's not specific amount of time that someone can stay awake .... that the longest you can stay awake ( no REM sleep) before you die is ...