How to withstand 9Gs? 'Squeeze the leg, squeeze the butt, breathe!' – video
by Guardian Staff from on (#P39D)
Video posted to YouTube by David Fritz, with the permission of the man featured, shows a gruelling G-force test carried out in a centrifuge. Aviators and astronauts undertake high-G training to learn how to withstand high levels of acceleration during flight, when loss of consciousness can occur owing to G-forces moving blood away from the brain
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