Swing your arms man!

I don't know why this creeps me out so much, or why I instantly notice it when it happens.  Have you ever seen someone walking without swinging their arms?!?! Its a big pet peeve of mine and I find it so whack.  I stare at people who do this, and then after they cant see me I immediately  imitate their walk just to make myself laugh.  Why do people do this? I mean if you really break it down, it just seems so natural to swing each of your arms in opposition to your legs.  But at the same time swinging your arms seems to serve no mechanical function given that our arms don't touch the ground. Could it be that arm swinging while walking is hard-wired into the nervous system and serves no purpose because it was a vestigial relic left over from when our animal ancestors walked on all fours? Are we, who swing our arms the ones that are weird, while our non-swinging counterparts are evolving.......Bull crap..  Look, the simple fact is arm swinging requires little effort from your shoulder muscles.  When you walk, your body or torso naturally twists very slightly. From this torso twisting movement, swinging your arms actually makes your walk more efficient and easier.  Plus, I don't believe in evolution so four armed ancestors my butt.

Bottom line: Stop making life hard on yourself people! Swing your arms when you walk, it's easier and you won't look like Robocop.