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It all depends on the person. In the military you develop capacity to withstand long hours without sleep. 20 years ago I could go without sleep for 6 days before hallucinations. now 2 days is enough for me to hallucinate lacking sleep. This means the capacitiy is reduced with age.

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14y ago
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13y ago

yep. After about 72 hours, you begin to have micro-naps, where your brain begins to shut down for short periods of time (usually 30 seconds) where you're dreaming while you're awake. I tried this and I saw things that werent there, heard voices even thought i was alone. Scary stuff

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12y ago

I have read you can hallucinate anywhere from 3 to 4 days without sleep, I'm going on 2 days without sleep right now and I'm doing fine, the only way to really find out for sure is to test your body itself everybody is different, if you go longer then 2 weeks without sleep it WILL result in death

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12y ago

It depends on the person but anywhere between three and seven days.

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Q: How long can a person go without sleep before they start to hallucinate?
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What would happen if you didn't sleep for 5 days?

you will start to hallucinate.


Does lack of REM sleep make a person hallucinate?

Yes, a person needs REM, in the ICU at hospitals there is a diagnosis knowen as ICU psycosis. It means that a patient is showing signs of psycosis due to the lack of sleep. This often includes both visual and auditory hallucianations. Once the regualar pattern of sleep is restored the hallutions /psychosis disappears.


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There are many techniques a person can follow to get better sleep. These include reading before going to sleep, not watching screens and taking a bath before going to bed.


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8 days


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I have heard and seen a person sleep sing before. However, I am unsure if this person simply has some sort of problem/disorder.


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Most people can survive for around 11 days without sleep, but extended periods of sleep deprivation can lead to serious health consequences such as cognitive impairment, mood swings, and even hallucinations. It is crucial to prioritize and maintain healthy sleep habits for overall well-being.


How can I sleep in my boyfriends room without getting caught?

It is not easy to sleep in your boyfriends rooms without getting caught. If one wishes to sleep in their boyfriends rooms without being caught by an adult they should be quiet and return to their own bed before morning.


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