You’ve heard of performance-enhancing drugs, but what about performance-enhancing sandwiches? A new ESPN exclusive sheds light on how an all-American staple — the hum-drum peanut butter and jelly sandwich — has become a secret pre-game addiction for legions of NBA stars from Kevin Garnett to Damian Lillard to Steph Curry. Morning Shift talks to ESPN sportswriter Baxter Holmes about this unlikely trend and how it has migrated from team to team across the Eastern and Western conferences.