How many days can a person live without sleep?


Quick Answer

Though the question is more complex than it appears, a person typically cannot die as a direct result from a lack of sleep. This is because humans will drift into a microsleep, even under cases of extreme sleep deprivation, which is enough to keep them alive.

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Full Answer

One incredibly rare sleep disorder, affecting only a handful of people each year, entirely prevents sleep, including microsleep. This disease, called fatal insomnia, results in death between a few months to a few years.

When it comes to staying awake willingly, many world record attempts end between 8 and 11 days.

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