Task: Story Composition
Input (English): Premise: I saw myself in the mirror after getting out of the shower. 
 Initial Context: There was a lot more flab around my waist than I remembered. 
 Original Ending: I immediately put on my workout clothes. I drove to the gym. I began a new workout regimen to lose some weight. 
 Counterfactual Context: I was too skinny.
Output (English): I immediately put on my workout clothes. I drove to the gym. I began a new workout regimen to gain some muscle.