– Why do people pass out when subjected to high g-forces?
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When oxygen doesn’t reach your brain you pass out very quickly. First your hearing and vision goes away and then you pass out. When subjected to high G forces it messes with our blood circulation. It often pushes your blood out of your head. Our heart just can’t produce the required blood pressure to counteract the acceleration. So no blood reaches your brain therefore no fresh oxygen and the brain stops to function. Spend around 2 minutes without oxygen reaching your brain and you are dead.
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