Unlike most Hollywood celebs, Jessica Biel has curves and an athletic build. Almost anytime you see a candid shot of Biel, she's walking her dogs, going for a job or playing an outdoor sport. It's clear to see why she has such a fit body. Over and beyond that, according to Biel's trainer she eats a 'clean'diet, meaning no over processed foods or things in packages. It's all about clean eating for her.