He's the creator of the TB12 method and has worked with Brady as a personal trainer and body coach since 2004. I also asked Guerrero to respond to some of the criticism the TB12 method has received.

His extreme diet is a key part of what he refers to as the TB12 Method, an approach consisting of 12 fitness principles that Brady outlines in his book, called "The TB12 Method: How to Achieve a ...

Future Hall of Fame quarterback Tom Brady is a compelling and authoritative figure who dominates everything he does — except maybe in the broadcast booth. NFL insider Dianna Russini’s insight into ...

Now, football fans can learn all of Brady's fitness secrets in his new book, entitled The TB12 Method: How to Achieve a Lifetime of Sustained Peak Performance. Published in September, the book is ...