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Sometimes you will feel nervous because of reactants in your brain that then set off your "nervous system". The nervous system helps you infact, if it wasn't for your nervous system you could be dead! The nervous system reacts off of your brain saying that something isn't right and that something should be done. If we didn't have that to rely upon then your brain would simply stop working in result of your brain telling your heart to stop pumping and eventually once your heart would stop you would die.

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16y ago

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