Studies show that the more active you are, the more magnesium you need. Scientists have linked a high level of magnesium in blood to improved muscle performance, which means that you can improve your performance by ensuring an adequate supply of this important mineral. According to studies, magnesium appears to lower lactate levels in your blood. Plus, exercising without sufficient magnesium will lead to increased oxygen consumption and heart rate. Magnesium also plays a major role in strengthening your immune system. It works similarly to an antioxidant by strengthening your defenses and protecting you from diseases. Mag-on energy gels contain 50 mg of highly absorbable water-soluble magnesium, plus valuable sodium, and 120 kcal of energy.