Sports Drinks Lack Magnesium Which is Vital for Proper Hydration. Commonly available sports drinks like Gatorade, Allsport and Powerade are less than optimum for rehydration purposes because they contain no magnesium. Get More Info | Cramping: the Mortal Enemy of Elite Athletes and Weekend Warriors. Magnesium is also essential in addressing an issue common to almost all of the athletes —muscle cramping. “When athletes first come to me, many of them have a history of cramping up. They get muscle cramps in their workouts and even in their races. When that happens, I know they do not have enough magnesium in their bodies. Find out more. | Magnesium, How Does it Fit In With Exercise. Magnesium is involved in numerous processes that affect muscle function including oxygen uptake, energy production and electrolyte balance. Thus, the relationship between magnesium status and exercise has received significant research attention. Find out why. |