A speaker walks through a park, and the poem sets two very different things side by side. On one hand there is the "green agreement of the park," a calm, orderly image of nature all in harmony. On the other are "sorrowful stories" and "dead unburied dogs," which bring in loss, neglect and death. The speaker moves between them without stopping.
The most telling line is "I walk to walk." There is no destination and no clear purpose, only the habit of putting one foot in front of the other. That makes the walk feel like a way of coping, or of getting through the day, rather than a leisurely stroll. The title, "Goth fitness," adds a dry, darkly funny note: exercise taken in a mood of gloom.
The tone is flat and quiet. The speaker doesn't cry out or explain, just passes by the dead dogs, which suggests numbness or a hard-won acceptance. The park's peace feels slightly uneasy, as though it agrees to ignore what lies within it.