system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What causes my stomach to hurt when it’s hungry but then it “un-grumbles” and the pain goes away?

If I’m hungry for too long, my stomach grumbles weirdly; it hurts a lot and then releases a big grumble and it doesn’t hurt as much. What is this?
gpt
Your digestive tract moves food through it via squeezing it along, in an action called peristalsis. Gas bubbles or other blockages can build up in certain places and cause pain. If the bubbles are being squeezed and suddenly find a path to another region, the pressure is reduced and this movement can cause noise. In some cases when you are hungry and have a less full stomach a larger fraction of the space can potentially become air, though it may not always be related to hunger - rather gas production by your gut microbes.