Final answer:
Not stepping on lines or cracks is not an example of hypochondria. It is more of a superstitious belief or common childhood game, but it is not a symptom of hypochondria.
Step-by-step explanation:
No, not stepping on lines or cracks is not an example of hypochondria. Hypochondria, also known as illness anxiety disorder, is a condition characterized by excessive worry about having a serious medical condition, despite having no, or only mild, symptoms. Avoiding stepping on lines or cracks is not related to this condition. It is more of a superstitious belief or common childhood game, but it is not a symptom of hypochondria.