Other causes of stomach rumbles: 1  Incomplete digestion of food can lead to excess gas in the intestine. 2  Louder rumbles may occur when one is hungry. 3  Stomach rumbles can form further along the gastrointestinal system when air is swallowed while talking, eating, and drinking.
One cup of raw yams contains about 158 calories, whereas 1 cup of raw sweet potatoes contains about 114 calories. Therefore, yams contain about 44 more calories than sweet potatoes for an equal portion.
BAKED SWEET POTATO. 1  54 calories in one small baked sweet potato (2 ounces, or 57.7g) 2  105-108 calories in one medium baked sweet potato (4 ounces, or 113.4)  156-162 calories in one average large baked sweet potato (6 ounces, or 170.1g)