When one considers how great an athlete Brady is for his age, his devotion to a strict program makes a lot of sense. Bernard Hopkins at age 46 is totally fanatical about his diet, so much so that he does most of his own cooking.
My buddy out here in SF is a staff "doctor" for the Oakland Raiders and for a few UFC fighters - his beliefs are more based on sleep and eating habits too, but he is also very open to more Eastern beliefs - incorporating meditation, Yoga, Chiropractics, buddhist practices etc. That's just California for you I guess. Brady was mainly talking about eating habits - not nearly so "out there".