Responding to "How are you?"

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.