Improving on nature ... by design ...

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Muscle action is electrical

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Just a quick correction. Muscle contraction is driven by ATP, it is a chemical reaction. The contraction is stimulated by a release of ions from nerves. Although there is a voltage difference across the membrane, nerve impulses are actually driven by the release of positive ions as compared to electrical impulses which are travelling electrons. However, electrical currents can cause the release of these ions and mimic the effect of a nerve impulse. Just a pet peeve, but I hate it when people say that nerve impulses are electricity. If this were true then people would have to explain why nerve impulses only travel at 50-70 meters per second as compared to electricity which travels at 300,000,000 meters per second.

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a reason I said electrical rather than electricity.

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Fair enough. Like I said, sometimes I get a little short when certain aspects of biology and physiology are misrepresented on a regular basis.