system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does anxiety or panic cause chest pain?
gpt
Because everything is connected.

When you panic the brain releases "fight or flight" hormones called adrenaline which prepares your muscles for fighting or fleeing, both extremely taxing activities. Your heart (muscle) is not immune, it begins beating more rapidly. This means more blood needs oxygen, so you breath faster. Depending on your body type and conditioning, this can be accompanied by pain. Like the pain you feel when you're out of shape and go jogging for the first time in months.

Something else that we don't talk about a lot in western medicine is the way our thoughts make us feel. Depression, for instance, can cause minor to moderate aches and pains.

Anecdotally, a friend of mine went to a Rheumatologist for arthritis and was diagnosed with depression. A small dose of Zoloft cured her hand/wrist pain.

Coming back around to the beginning, everything in your body is connected. A thought/feeling causes different brain/body chemistry which causes muscles and organs to react different from their normal state.