While the concept of a 100-calorie snack is very tempting, not all snacks are created equal. As food journalist and author Mark Schatzker discovered, highly-processed foods will make you feel hungrier faster than nutritious fiber-filled foods. In some cases, certain snack packs can actually lead to people packing on the pounds, since these pre-portioned treats give the illusion of control and lead to overeating down the road. If you are looking for a healthy snack for minimal calories, follow our formula: protein + fiber and a bit of indulgence. Here are our five picks.