system
Given the following post, respond as if you're commenting on Reddit:
human
What happens when our stomachs grumble?

I’m sitting at home and my gut is trying it’s best whale impersonation and it got me thinking, what exactly is happening?
gpt
It’s usually associated with the beginning of the gastric phases.   Before we even eat, the thoughts and smells of food cause our vagus nerve to begin sending signals to our digestive tract.  It’s essentially Priming the tract to get ready fo food.  Muscle contractions begin and so does the secretion of lots of mucous and other stuff to help us digest.