system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 - Why do our stomach's make a grumbling sound when we are hungry?
gpt
Basically, when you think of food, your stomach begins to excrete hydrochloric acid and begins to churn in expectancy of food. When no food arrives, the gas pushed around in the stomach from the churning escapes making a grumbling sound. This is also why it doesn't happen immediately, it takes a while for gas concentration to reach that level.