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This had to be a terrifying way to go
(lemmy.nz)
A place for majestic STEMLORD peacocking, as well as memes about the realities of working in a lab.

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I think a big part is conditioning. If all the walking & running you've ever done was shoeless, you're just more able to run shoeless than someone who only takes their shoes off inside a modern home.
Big fricken caluses on the bottoms of your feet.
They also ran on dirt and not tarmac or pavement.