In addition to being deliciously sweet, berries such as raspberries, blueberries and strawberries offer an abundance of antioxidant capacity. Blueberries, raspberries and blackberries are rich in proanthocyanidins, antioxidants that can help prevent cancer and heart disease. Eat them frozen in a morning smoothie, toss a handful over your morning yogurt or cereal or enjoy them as an afternoon snack.