Native to Brazil, Navel oranges are actually the most common variety of orange for eating. These oranges are medium to large in size, globular to slightly oval in shape and have a pale yellow-orange flesh that is juicy, tender and seedless. In addition, Navel oranges are aromatic, sweet, and contain a low-acidity which produces a balanced level of sweet, tangy, and tart flavors. Nutrition-wise, these fruits are filled with Vitamin C, fiber and potassium, and are also low in calories. As a matter of fact, consuming navel oranges more often may protect against heart disease, cancer and diabetes, and help to improve memory, blood pressure, the immune system and overall health.