You can wake up naturally or be forced to wake up by e.g. loud noise, pain, water.
How does it work?
Bonus question: Why is it possible to cut your blood supply to your arm and not be woken up for hours? (I slept on my arm for 6 hours, felt no arm after waking up)
In: 31
Cutting off the blood supply is, I believe, just cutting off the nerve connections to you brain. After that communications are cut off wit the arm then it goes into a phase where it connects back to the brain causing the “pins and needles” feeling
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