The human body just isn't made for some things. Flying, or diving, or extreme heat or cold...and certainly not a lot of g-force.
But if you're a U.S. Air Force pilot, g-forces are a part of the job.
Here's a shocking video of a few Air Force trainees in a Randolph Air Force Base centrifuge accelerating to a maximum of seven Gs to prepare to combat gravity-induced loss of consciousness in the field:
The real heavy stuff starts to hit around the 1:50 mark. (Warning: some on-screen yakking occurs.)
This post was originally published on Smartplanet.com