A muscle cramp is a strong, painful contraction or tightening of a muscle that comes on suddenly and lasts from a few seconds to several minutes. It often occurs in the legs. A muscle cramp is also called a charley horse. Nighttime leg cramps are usually sudden spasms, or tightening, of muscles in the calf.The muscle cramps can sometimes happen in the thigh or the foot.t often occurs in the legs. A muscle cramp is also called a charley horse. Nighttime leg cramps are usually sudden spasms, or tightening, of muscles in the calf. The muscle cramps can sometimes happen in the thigh or the foot.
Where do penguins live? King Penguins are found in Tierra del Fuego, Subarctic islands and South Georgia Island. Chinstrap Penguins are found in Antarctica, South Sandwich Islands, South Shetland, South Orkneys, South Georgia Island Bouvet, Peter Islands and Balleny.
Adelie Penguin Distribution and Habitat. The Adelie Penguin is one of the southern-most Birds in the world as it is found along the Antarctic coastline and on the islands close to it. During the winter months, the Adelie Penguins migrate north where they inhabit large platforms of ice and have better access to food.