Life on Earth needs gravity to survive, but how much gravity is too much? Part 1 of 3 - Part 2 of 3 - Read More: High-Tech Suits Help Pilots Avoid Gravity's Perils “The human body, for all its extraordinary capabilities, is just not made to take 6, 8 or 12 times the normal force of gravity. And its responses to this assault, from impaired vision to loss of consciousness, can prove fatal if they occur in the air.” All About G Forces “Before the advent of airplanes, which could accelerate the human body like nothing before, people rarely experienced G forces. So-called gravity forces first became a concern during World War I, when pilots began mysteriously losing consciousness during dogfights. As early as 1919, a doctor wrote up this strange phenomen
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