what are charlie horses
Charley horse is another name for a muscle spasm. Charley horses can occur in virtually any muscle, but they are most common in the legs.These spasms are marked by extremely uncomfortable muscle contractions. The muscles donât relax for several seconds or more, and the pain can be quite severe.he most common causes of charley horses include: 1  inadequate blood flow to the muscle. 2  muscle injuries. 3  exercising in excessive heat or cold. 4  overuse of a specific muscle during exercise.