Coming from a place of seeing a video where a person had a cardiac arrest and they went from working out to dropping on the floor without a single body part movement in like a second or two.
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Why it’s not a gradual process, why it’s seeming from 0 to 100%? What happens?
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Once the heart stops functioning, the blood flow stops, and the brain no longer gets any oxygen. The brain’s response to that is to shut down immediately, both to reduce oxygen requirements and to render the body horizontal, since in many cases that improves blood flow. In case of cardiac arrest, obviously, those measures are futile and the brain simply dies unconscious in a few minutes.
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