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 may also refer to: Political entities Denmark (European Parliament constituency) , the associated constituency The Kingdom of Denmark , consisting of Denmark, Greenland and the Faroe Islands Municipalities, communities, and streets Australia Denmark, Western Australia Ireland Great Denmark Street , Dublin United Kingdom Denmark Street , London United States Denmark, Indiana Denmark, Iowa Denmark, Maine Denmark, New York Denmark, Ohio Denmark, South Carolina Denmark, Tennessee Denmark ...