BETHENNY'S SNACK: "While en route to Newark airport, I munched on a bag of low-fat chips in the car. When I got there, I bypassed the frozen yogurt and had a fruit cup," Bethenny says. OUR EXPERT SAYS: "We all get stuck traveling, so it's important to be prepared. My go-to travel snack is a bag of nuts, like pistachios. Mix with 1/4 cup of whole-grain cereal for a fiber boost."