How to withstand 9Gs? 'Squeeze the leg, squeeze the butt, breathe!' – video!!

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.

theguardian.com