Responding to "How are you?"

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In some countries (the United States, among others), the question "How are you?" is often asked as an alternative greeting. In these countries, the expected answer is usually "I'm fine/good, thanks. How are you?" Answering honestly, especially in any detail, may cause the other person to respond with surprise or confusion.

In other countries, this question may be a legitimate (albeit likely brief) inquiry into your health.