Why do people's arms move back and forth when they walk?

gmackematix

The swinging of arms when we walk is instinctive and co-ordinates our arms to move out of the way of our hips which sway slightly as we walk. The hips sway to shift our weight against the back and forth movement of our legs. This in turn keeps our centre of gravity low and puts less pressure on our spine. This probably explains it better: http://ezra.cornell.edu/posting.php?timestamp=1013662800 May 14 05, 6:39 PM

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