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.
the kingdom of denmark is a sovereign state that comprises denmark proper and two autonomous constituent countries in the north atlantic ocean the faroe islands and greenland denmark has a total area of 42924 square kilometres 16573 sq mi and a population of 5 7 million