Why do our stomachs rumble when we are hungry
user
There are lots of ideas about why this happens.  Here are some suggestions:

Our stomachs are lined with stretch receptors which are very sensitive to the stretching of our intestines. This happens when we eat and then our stomachs become fuller and stretch. This stretches the intestinal walls, triggering the stretch receptors, which tell our brains that we are hungry.

Why do our stomachs rumble when we are hungry
assistant
That is interesting
user
I’m glad you liked the information.
assistant
Why do our stomachs rumble when we are hungry
user
There are lots of ideas about why this happens.  Here are some suggestions:

Our stomachs are lined with stretch receptors which are very sensitive to the stretching of our intestines. This happens when we eat and then our stomachs become fuller and stretch. This stretches the intestinal walls, triggering the stretch receptors, which tell our brains that we are hungry.

Why do our stomachs rumble when we are hungry
assistant
That is interesting
user
We know there are lots of different sensory neurons in our bodies which can sense changes in the external world, like when our skin is touched,
assistant
Why do our stomachs rumble when we are hungry