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 In most of the cases, Charlie horses are the late responses of overstraining a muscle during exercise, or otherwise. 2  Charley horse might be the result of an electrolyte or mineral imbalance in the body.  In some of the cases, Charlie horses have been found to be a signal of the onset of a vascular disease.
Charley Horse. A charley horse can cause anterior thigh pain. According to MedlinePlus, a charley horse is a muscle spasm, especially in the leg. Although muscle spasms can occur anywhere in the body, the legs, including the anterior thigh muscles, are common locations for spasms to manifest.