In the tunnel in the train station, Christopher feels giddy and sick because of the large amount of people, the echoes, and the smell of toilets and cigarettes. To cope, he put his hands on his ears to block out the noise and think of a plan of action.
Christopher sits in a seat in a cafe, closes his eyes, grips his knife, and groans to cover up the noise in the station. In order to be able to think about what he has to do and clear his thoughts, he does a math problem in his head.
Christopher goes through the underpass to get to the platform where his train was. Some people bump into Christopher, and he makes a barking noise to scare them off. He also pictures a red line that he is to walk on with a certain rhythm.
When Christopher gets on the train, there are a lot of people. As a response, he stays very still, and doesn't move.
While sitting on the train and looking out the window, the amount of different scenes and things make Christopher's head hurt, imagining everything. As a response, he closes his eyes, counts, and groans.
On the train, after going to the toilet, Christopher climbs onto a shelf to feel safe. It creates a dark and quiet environment for him that made him unable to hear anyone talking andalone, which he found nice.