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.
A number of factors may cause a muscle to cramp or spasm. The most common causes of charley horses include: inadequate blood flow to the muscle. muscle injuries. exercising in excessive heat or cold. overuse of a specific muscle during exercise. stress, most often in the neck muscles.