Today's true sports drinks are still the classic Gatorade -- packed with the electrolytes potassium, magnesium, calcium, and sodium to provide energy during intense workouts -- as well as competitors such as Cytomax, Allsport, and Accelerade.
1 Low levels of minerals, such as sodium, magnesium or potassium, in the body can be one of the reasons for Charlie horses. 2  Deficiency of calcium in pregnant women can also be another reason for the onset of Charley horse.  Low level of liquids in the body, while exercising, might be a probable cause of Charley horse.
Charlie Horses can be described as the muscle spasms experienced by a person. In this article, we will tell you reasons behind charley horse. What Causes Charlie Horses. Charlie horse is the name given to a muscle spasm or cramp experienced by an individual, especially in the leg. The most probable area where Charlie horse strikes is the calf region and that too, at night, lasting for a few seconds to few hours, thus awakening the patient.