Many people find that snacking keeps their hunger in check and lets them eat less at mealtime. And most diet experts agree that snacks can be part of a healthy diet, as long as you pick the right thing to munch. Nuts are full of protein and fiber, and although they contain a fair amount of fat, it is mostly monounsaturated fat - the right kind of fat. Walnuts in particular contain vitamin E and alpha-linoleci acid, an omega-3 fatty acid that turns out to be really good for your heart. So snack away, just remember that because they are high in fat, and sometimes salt as well, don't overdo it. A small handful of nuts is enough to stave off the hunger pangs till dinner.