It’s a well known fact that Tom Brady takes meticulous care of his body which is why there’s talk of him playing at an elite level well into his 40s. Now, the New England Patriots quarterback is passing along what he’s learned in a new book set to be released in September. The TB12 Method: How to Achieve a Lifetime of Sustained Peak Performance is basically a fitness book. Publisher Simon & Schuster, which announced the title on Thursday, said The TB12 Method will reveal Brady’s “revolutionary approach to his training and exercise regimen.”

Brady’s meals are mostly vegan. According to his chef, “(Brady) doesn’t eat nightshades, because they’re not anti-inflammatory,” his chef, Allen Campbell, told The Boston Globe last year. “So no tomatoes, peppers, mushrooms or eggplants. Tomatoes trickle in every now and then, but just maybe once a month.”

Simon & Schuster president Jonathan Karp said the book will give a glimpse into how Brady has been able to achieve peak performance at 39. “We expect this book to become an essential source for the way athletes of all ages live and train, whether they are in high school or in retirement,” he shared.