Greek Yoghurt: Greek yogurt, which is strained to remove whey, is thicker and creamier than regular yogurt, making it a healthful stand-alone snack, a great mixer for fresh fruit, cereal, or nuts, and a healthy swap for fattier dairy products. The yogurt's power comes from its protein- Greek yogurt contains 15 to 20 grams of protein in a 6-ounce serving versus 9 grams in regular yogurt.