NFL purists say he should not have been doing that. Here are some other things he could be doing, although "watch the game" is not on this list.

Philadelphia Eagles receiver AJ Brown got in a little reading during the birds' 22-10 victory over the Green Bay Packers on Sunday during a Wild Card round matchup.

Eagles coach Nick Sirianni was the latest to weigh in on Brown’s reading habits during Tuesday’s appearance on Philly sports radio’s WIP Morning Show and said that he was completely “O.K.” with the Pro Bowl wideout’s behavior. Sirianni gave his full support to Brown for doing what he needed to do to mentally prepare for the game.