Electric muscles

There is a popular belief that the muscles of our body are controlled only by electrical impulses. This is not entirely a lie, but ... From what little I have researched, the nerves send a command for the muscle fibers to contract into a chemical reaction involving ATP that releases a certain amount of energy that causes the fibers to contract.

If I were to make an alternate world where living beings evolved to use electricity in their own body to contract the muscles, would that actually be feasible? Evolution always goes by the path of the dynamic and viable adapting to the environment, so I am in doubt, because for this to be possible, would require an absurd amount of energy, and with that, an absurd need to feed.

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Electric muscles

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