There's no such thing as a "perfect" body, so what's the big deal if your stomach isn't flat? It isn't just a problem of aesthetics.

There are two types of fat: visceral and subcutaneous. Visceral fat is the kind that lies far below the surface, surrounding your organs. Subcutaneous fat is just below the skin and can be easily grabbed. You can spot visceral fat via an MRI or CT scan, but there's a simple test for it at home: If you have a large waistline or you're apple-shaped, you likely have visceral belly fat.