The Saturday evening post is a diary. The front page has painted by Norman Rockwell from 29 April 1922. I can see a young teenager watching a poster of a muscular man and doing bodybuilding, and a dog below the chair.
I think this boy is more attracted by doing bodybuilding than doing his homework, because we can see his school books behind him.
J'ai écrit que le petit garçon était plus attiré par la musculation que par ses devoirs car on peut voir ses cahiers derrières lui..