After a whole year off, Santa's obviously got to warm up for that sleigh ride somehow...
In order to successfully deliver presents who all those deserving children (and hard-working journalists) in just one night, you have to figure that Santa ends up pulling more than a few Gs (about 17,500 if you believe the calculations on one website). That's a bit more than the six Gs that Deakin University's Universal Motion Simulator (aka flight simulator on a giant robot arm) maxes out at, but it looks like Santa is more or less satisfied with his pre-flight workout:
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Evan Ackerman is a senior editor at IEEE Spectrum. Since 2007, he has written over 6,000 articles on robotics and technology. He has a degree in Martian geology and is excellent at playing bagpipes.