for what reason do muscles work? Samuel Roman.

for what reason do muscles work?

Samuel Roman, Age 7 California

A muscle can't push. It can solitary pull. But it's a great little machine that uses chemical potency to do work. And like all machines, it effects some heat as it works. That's for what cause [i]or[/i] reason you get warm when you exercise.

A muscle is made of tiny fibers that slip in between single in kind another. A chemical reaction makes the

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