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 Causes, Relief. A charley horse is basically a muscle spasm that occurs in your leg. It is an involuntary, sudden, and sometimes powerful muscle cramp or contraction that causes muscular pain ranging from mild to severe.The pain is often described as feeling like someone has tied the muscle into a a knot..f you get charley horses often, your doctor will want to figure out why and then treat the cause. But there are no imaging studies or blood tests that can reliably diagnose the causes of a charley horse. In certain cases where damaged or irritated nerves are involved, an MRI may be useful.