When presented with a choice, always choose the least processed option. For example, when standing in front of the vending machine, you may see peanut butter crackers, candy bars, pop, pretzels and nuts. Of these, I would choose the nuts. Granted, if from a package, they will probably be salted and roasted but I bet the ingredient list is much shorter than any of the other options. Ideally, packaged products should have 5 ingredients or less. If an apple is available in the vending machine, even better. You know they haven’t done much to that!