100% fruit juice is a good addition to your breakfast. Without the added sugar, you're getting much of the fruit nutrition without added ingredients. The RDs over at HealthCastle shared their list of the top five juices:

• Concord Grape juice. According to a recent study, grape juice has the highest amount of antioxidants.
  
• Wild Blueberry juice. A close runner-up to grape juice, blueberry juice is also high in antioxidants. (Some listings rank it higher.)
  
• Cranberry juice. The flavonoids in cranberry juice can improve blood flow, possibly benefiting blood pressure and cholesterol while reducing the risk of blood clots.
• Cloudy apple juice. The cloudier varieties of apple juice are less filtered. Subsequently, they have more antioxidants than highly filtered varieties.
  
• Fortified orange juice. Many OJs are fortified with calcium, vitamin D, or plant sterols.

Do pay attention to serving sizes, however. A tall glass of orange juice may be two or even three servings. Stick to a small juice glass so you can enjoy your morning beverage without going overboard.