When Strange Belief Turns Harmful

Guerrero, a former missionary turned charismatic fitness guru, is Tom Brady’s miracle man, credited with allowing the star quarterback to play at a top level into his 40s. The two have teamed up to spread the Gospel of TB12 — in a best-selling book and TB12, a lucrative training and fitness brand. In TB products and promotions, Guerrero shares almost every moment of Brady’s life — what he eats, how he exercises and rests, how he mentally prepares for games. He’s even godfather to Brady’s son.