Your muscles. Some muscles are “voluntary.” They
are the ones you control, the ones that let you exercise—or
relax. Some muscles are “involuntary.” They just do their
job with no effort on your part—like your heart muscles.
V≈4851.98cm³
Answer with explanation; I searched it up :)
If you like to run, it is probably the best, in my opinion. If you are
already running, keep it up. Run in moderation (forget the
marathons….think long term, not long distance).
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All of those ARE reasons why communicable diseases kill fewer people today except for B. Your answer is B.
