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 Low levels of minerals, such as sodium, magnesium or potassium, in the body can be one of the reasons for Charlie horses. 2  Deficiency of calcium in pregnant women can also be another reason for the onset of Charley horse.  Low level of liquids in the body, while exercising, might be a probable cause of Charley horse.
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.