The best snack bars are the ones that are made with ingredients your grandma would recognize. Many are formulated using stuff with weird names like "inulin" (a type of fiber) and "soy isolate" (a type of protein). "Make sure the primary ingredients are whole or minimally processed foods, such as almonds, cherries, and oats," says Alan Aragon, M.S., Men's Health's weight-loss coach. Whole foods deliver greater health benefits than refined ones do because a food's nutrients are more powerful when they work together, which they can't do as well after being dissected in a lab. Aragon also looks for at least 4 grams each of fiber and protein and less than 250 calories. But flavor counts, too, so we went beyond the numbers and tasted more than a dozen bars. Here are our fab five.