system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does grunting, groaning or generally making little noises when you are in pain help the pain level go down?

I have had pain ranging from migraines to broken bones and the only consistent thing I've noted is that a groan, moan, grunt or some other form of low vocalization seems to help the pain level go down a bit, even if it's only temporary. Why is that?
gpt
your brain can only take a certain amount of input, and can only focus on so much at a time.  By vocalizing, you're focusing your brainpower on an output and a feeling other than the massive pain input that your brain wants to focus on.

Another method that's been proven to work are things like virtual reality sims where someone can explore a complex area and focus on that experience.