Characteristics of a healthy snack include being nutrient-dense, providing a balance of macronutrients, and being low in added sugars and unhealthy fats. Ideal snacks should offer a combination of protein, healthy fats, and complex carbohydrates to sustain energy levels and promote satiety. Options like fresh fruits, nuts, Greek yogurt, and vegetable sticks with hummus not only satisfy hunger but also contribute essential vitamins and minerals. Choosing healthy snacks supports overall dietary goals and helps manage cravings between meals.