system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If our stomach (organ) is up near our rib cage, why do we feel full more in the area of of our small intestine when we overeat?
gpt
When you overeat, there are several different feelings you might be feeling. One of them that is near your small intestine is the buildup of gas which comes from gut bacteria digesting food for you. There are other feelings which are in different parts of your body, such as upset stomach, indigestion (dyspepsia), and regurgitation—those last three often caused by acid reflux. You could also feel distention, or bloating, which is also caused by gas.