Sentence 1: Jill wanted to get in shape. 
 Sentence 3: She started running in her neighborhood 
 Sentence 4:  She got tired after 2 blocks 
 Sentence 5:  Afterwards, she walked back home to rest 
 Option 1: It had been Years since she had gone on a run. 
 Option 2: She decided to join a gym and only lift weights.