Yogurt is an excellent source of protein and calcium, and berries are high in vitamin C and powerful antioxidants. Berries help your body combat stress, and they contribute to beautiful, glowing skin. Since berries contain water they also help you stay hydrated during the hot summer days. Yogurt with berries is one of the healthiest and most delicious snacks to try this summer. You can also add a whole grain cereal to your yogurt if needed.