Suggestions on Dad's Healthy Junior Middle School English Composition

My father retired. He is fat and short. He likes greasy food. After retirement, he had nothing to do and no money to eat greasy food or go to karaoke for beer. He began to eat less fatty food. He stopped going to karaoke and started jogging. Jogging doesn't cost him much. Now, my father is very healthy. His friends no longer call him fat.