A complex carbohydrate snack is the best thing to eat before a run. Carbohydrates are our bodies’ quickest source of energy and keep your blood glucose level at a constant, giving you a steady supply of energy. For short runs under 2 hours, a banana and a tbsp of nut butter is a great way to begin your training. For long runs start with a good complex carb like oatmeal (1 cup) and add 2 tbsp of peanut or nut butter 45 min before you run. You can use other complex carbs such as yams, corn, artichokes, potatoes, rice, seeds, legumes.