Any of the muscles that are under our voluntary control (skeletal muscles) can cramp. Cramps of the extremities, especially the legs and feet, and most particularly the calf (the classic  charley horse ), are very common.
Northern Europe includes Denmark, Finland, Greenland, Iceland, Norway, and Sweden. This area is known for harsher environments. It is generally cold, has poorly developed soils and limited mineral resources. This region has a population of over 25 million people.
Denmark is part of Scandinavia, together with Sweden and Norway. The Kingdom of Denmark is a sovereign state that comprises Denmark and two autonomous constituent countries in the North Atlantic Ocean: the Faroe Islands and Greenland.Denmark proper has an area of 43,094 square kilometres (16,639 sq mi), and a population of 5,678,348 (July 2015).he Kingdom of Denmark includes two overseas territories, both well to the west of Denmark: Greenland, the world's largest island, and the Faroe Islands in the North Atlantic Ocean. These territories are self-governing and form part of the Danish Realm.