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.
Situated in southern Scandinavia, the Kingdom of Denmark consists of Denmark proper, the Faroe Islands, and Greenland. Denmark proper, comprising the peninsula of Jutland (Jylland) and 406 islands (97 of them inhabited), has an area of 43,094 sq km (16,638 sq mi) and extends about 402 km (250 mi). â. and 354 km (220 mi).