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stoofur | 13:02 Mon 21st Jan 2008 | Body & Soul
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Why is it when humans run we have to pump our arms? It seems also there is a corrolation with the speed our arms move to the speed our legs move.
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Balance, and to keep the torso straight.
13:14 Mon 21st Jan 2008
Avatar Image 4getmenot
And you do go faster
13:15 Mon 21st Jan 2008
Avatar Image novalis
Newton's Third Law of Motion-- To every action there is an equal and opposite reaction. Left leg forward. right arm back and vice versa.
13:17 Mon 21st Jan 2008
Avatar Image 4GS
If you didn't pump your arms, you would fall over
13:18 Mon 21st Jan 2008
Avatar Image redcrx
and this is what happens if you dont move your arms fast enough.

https://www.youtube.com/watch?v=IrP9anxy0pY
14:46 Mon 21st Jan 2008
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Thanks for that guys. But my work colleague just demonstrated in the office that you can run without falling over. (Yes the boss is out of the office today!) I must admit he did look stupid (my colleague not my boss).
15:26 Mon 21st Jan 2008
Avatar Image 4getmenot
well thats it then you look stupid if you dont :-)
16:54 Mon 21st Jan 2008

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