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What would happen if… gravity suddenly doubled? 30 seconds in: Your body freezes. Muscle fibers twitch under pressure. Your spine compresses. Discs flatten. Your heart struggles to push blood upward. Your lungs feel like they’re filled with stone. 2 minutes in: Your central nervous system overloads. Every movement costs double. Knees buckle. Bones grind under stress. Even blinking feels heavy. Your blood starts pooling in your lower body. 10 minutes in: Your heart is racing… but failing. Oxyg