Why Does Your Stomach Growl?

Ever have your stomach growl loudly... right when the room gets quiet? Is it just

screaming 'I'm hungry'... or is something more going on in there? Your stomach and

intestines are muscles that squeeze and push food and gas along - like a slow-moving conveyor

belt. Imagine a train pushing through a tunnel - the walls squeeze to keep

everything moving. Those squeezes mix food, liquid, and air - and

when air pockets shift, they vibrate and create sound. That's the growl.

Here's the twist - your stomach even does this when it's * empty* to clean itself out,

which makes the sound even louder. And your brain can trigger these waves on a