Research indicates that marginally low magnesium (intake less than 260 mg/day for males, 220 mg/day for females) can amplify oxidative damage and impair energy generation during and after exercise. Strenuous exercise increases the loss of magnesium in the urine and chemicals in commonly consumed food sources can impede your ability to absorb dietary magnesium. Evidence suggests that magnesium supplementation benefits both exercise performance and recovery and can reduce the risk of bone fracture in sports. Magnesium is an extremely important mineral involved in over 300 enzymatic reactions in the body. Magnesium function for the athlete is very important for energy production, electrolyte balance, neuro-muscular function, bone and cartilage integrity, inflammation management, glucose metabolism. Low magnesium directly impacts exercise, training and performance. Low magnesium affects muscle contraction and relaxation leading to spasm and cramping. Magnesium is essential to bone mineral density reducing the risk of fracture. Smooth muscle in blood vessels require magnesium for relaxation improving cardiovascular function.