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 .

Question: Why is the narrator and Tracy so exhausted ?
Answer: It was too cold to get sleep .None of the above choices .They were unable to get sleep the night before .They took a trip to Pennsylvania .