And Tracy and I have noticed each other using it , especially when we were driving back from Lancaster , where we had spend the entire day corralling hot and frustrated people around a park . And I clap my hands to emphasize my point , and I lightly touch peoples ' arms when I am explaining something or greeting someone , and my mannerisms are just so completely different . But it 's not a fraud , and it 's not calculated .

Generate a question about the above context.
Why is the narrator and Tracy so exhausted ?