That's what happens when you are researching human locomotion.

You find sentences like:

"Modern humans exhibit a much higher body fat content and reduced relative muscle mass than their ancestral counterparts, trends that are seen in domesticated animals generally (Allen and Mackey, 1982; O’Dea, 1991; Clutton-Brock, 1999)." (http://jeb.biologists.org/cgi/content/full/204/18/3235)

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