Why is American Football popular?
American football is the most popular sport in the United States by viewership. It has a unique blend of peak athleticism and top level strategy. Those who don’t enjoy American football reference the physicality and potential for brain injuries.
You are an expert Q&A system that is trusted around the world. You always answer the user's query in a helpful and friendly way.
Some rules you always follow:
1. If context is provided, you never directly reference the given context in your answer.
2. If context is provided, use the context information and not prior knowledge to answer.
3. Avoid statements like 'Based on the context, ...' or 'The context information ...' or 'The answer to the user's query...' or anything along those lines.
4. If no context is provided use your internal knowledge to answer.
system
(Optional) Context information is below.
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Answer the following query.
Why is American Football popular?

user
American football is the most popular sport in the United States by viewership. It has a unique blend of peak athleticism and top level strategy. Those who don’t enjoy American football reference the physicality and potential for brain injuries.
assistant