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.
If a spasm is forcefully sustained and doesnât relax, then it ripens into a cramp. A charlie (charley) horse is a common term many use to indicate they either have a muscle spasm or cramp, typically in a thigh or leg muscle. This charlie of a horse is very often caused by dehydration and/or lack of potassium. A muscle spasm can occur in any muscle and you may be able to see or feel the hardened muscle, like a knot. Sometimes, muscle spasms will occur with such force that theyâll leave a bruise behind.