Fairley said his change in diet improved his play on the field.
"I feel a whole lot better just by not putting that bad stuff in my body," Fairley said, according to the Detroit Free Press. "You feel the energy, you feel it out there at practice."
Fairley now brings breakfast and lunch with him to the Lions' practice facility. When he gets home, he eats a prepared meal stored in his refrigerator. Fairley says he's mostly avoided fast food, which has made a big difference.
"That's something that we've been having planned from even OTAs last year, it's just I never really got along with it," Fairley said of his new diet. "I just felt like I could do it on my own. But I went to (my agent after my demotion) and was like, 'Let's give it a shot, give it a try.' "