system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: We breath the through the lungs. The air goes in and out of our lungs. So why is it that most of the time it's our stomach that inflates rather than the chest?
gpt
Your body can expand the lungs 2 ways, the ribs can stretch out to expand your chest, or the diaphragm under the lungs can expand into your gut which pushes your gut outward. You have probably been breathing with your diaphragm.