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.
When you are encountered with a Charley horse, you can do certain things to relax the muscle and reduce discomfort. 1  Stop all your activities immediately after you get the first sign of a muscle spasm in the calf or in the back of the thigh. 2  Stretch and massage the affected muscle in the opposite direction of the spasm.