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So back to your question: 1  Your chest hurts when you're emotionally sad because your brain processes physical and social pain in the same brain regions (dACC and AI) (the affective aspects of the pain). The fact that both pains overlap means the factors that decrease physical pain also decrease emotional pain.
And the scariest reason of all for chest pain stems from a heart attack that's occurring right now. So when is chest pain a sign of a heart attack? How long does a heart attack last? And when should you get help? Let's answer all of these important questions. What is a Heart Attack? First, let's briefly understand what a heart attack actually is.