It monitors and maintains your body's status quo - for example, it meters and regulates your blood pressure,
your body temperature, the level of toxins in your blood and the resultant urge to vomit (that's to
stop any more toxins making it from your stomach into your bloodstream).

It is supposed to regulate your body weight, to monitor the amount your stomach is distended,
it can be triggered by the prevalence of savoury smells, the need to eat... and so on...

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