>> According to physics, it would require 0 Jules. However, to keep the
>> object stationary against the force of gravity, the muscles in your arm
>> are having to continually expend chemical energy. But how the **** do
>> you compute how much energy that is??
> 
> Measure the amount of Co2 you exhale (a) normally, and (b) while 
> performing said feat, then from the difference compute the extra Co2 
> produced for that feat, and from that estimate the energy?

Sure. Now tell me how much energy is released by the production of 1 
unit of CO2...

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