If You Run, These 6 Foods Are a Must

High in the antioxidant beta carotene, sweet potatoes are also excellent sources of manganese and copper, nutrients that are essential for healthy muscle function. Bake it whole, roast wedges, enjoy cubes in soups, or mash it up for a creamy treat instead of going for greasy sweet potato fries. High in complex carbs, fuel up with sweet potatoes a couple hours before a workout, or post-workout to replace lost electrolytes such as potassium and magnesium.