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Do they work you mean?? Different variations of the position of your hands hits different muscle parts. Like doing push-ups with your hands far apart hits more of the chest area. Doing them with your hands close hits more of your triceps. I personally like them close.
Your brain has nerves and those nerves run throughout your system so in that case your central nervous system control everything. It is like a director it tells your heart to pump blood it signals everything it even control your homeostasis and reflex.
Provide the answer choices pls
