system
Given the following post, respond as if you're commenting on Reddit:
human
How quickly can food "run through you"? 

I hear people say,  "oh man that food is running right through me"  as they scamper off to the bathroom 20 mins after they ate.  Is there any truth to this?  I guess the question is how quickly can the body consume, digest, and expell a meal?
gpt
Food generally takes about eight hours to pass through you.  More rarely, it can take only two or three hours.  But if someone is running to the bathroom within just a few minutes, then that is because the food they just ate caused the intestinal tract to start convulsing to move food through it, which caused an increase need to move what was already sitting in it.