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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," ...

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

The easy experimental answer to this question is 264 hours (about 11 days). In 1965, Randy Gardner, a 17-year-old high school student, set this apparent ...

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.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).

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.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.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 ...

www.quora.com/How-long-can-a-human-being-survive-without-sleep

After 2-3 days you will start to hallucinate; after 5 days serious mental effects, and apparently ... effects, and apparently you can die after ~14 days (although I don't know reference... ... Submit any pending changes before refreshing this page. ... people are having dreams while fairly awake, which is a form of psychosis.

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.