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.
For a charley horse in the calf or a cramp in the back of the thigh (hamstring), try putting your weight on the affected leg and bending your knee slightly, or sit or lie down with your leg out straight and pull the top of your foot toward your head.uscle cramps can also occur as a side effect of some drugs. Medications that can cause muscle cramps include: 1  Lasix (furosemide), Microzide (hydrochlorothiazide), and other diuretics (water pills) used to remove fluid from the body.