system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why don't we trigger our gag reflex when we swallow food, but we do if we put our finger down our throat?
gpt
Our body doesn't like something being both down our throat and out of our mouth at the same time as it will choke you. Same goes for toothbrushes. You mouth is very aware of the size and shape of things you shove it it.