Anything with the word "cold" in it is unappealing when you're chilled to the bone. That includes cold cereal. But if it's steaming and nutritious, it sounds good at any time of day. Oatmeal is best served warm; it's natural and it contains the vitamins and minerals that'll keep you going on a cold day. Oatmeal is a perfect, quick snack because it can be ready to go in just a couple of minutes. Mix it with low-fat milk or soy milk to avoid unnecessary fat. To add sweetness, top it with other healthy options like raisins, sliced almonds or strawberries. Low-fat yogurt is also a tasty ingredient you can mix in to help keep your fire stoked when it's chilly outside [source: List My Five].