Given the task definition and input, reply with output. In this task, you're given a four sentences of story written in natural language. Your job is to complete end part of the story by predicting appropriate last sentence which is coherent with the given sentences.

Sentence1: Amy decided to start running to get her figure back. Sentence2: Amy bought new running shoes and running clothes. Sentence3: She was excited the first day when she started running. Sentence4: After the first block Amy was winded and struggling to run.
She ended up walking back home.