Magnesium is a cofactor in more than 300 enzyme systems that regulate biochemical reactions in the body, including protein synthesis, muscle and nerve function, blood glucose control and blood pressure regulation. Magnesium is required for essential body functions such as energy production and glycolysis. It contributes to the structural development of bone and is required for the synthesis of DNA. Magnesium also plays an essential role in normal heart rhythm and the active transport of calcium and potassium across cell membranes, a process that is important to nerve impulse conduction and muscle contraction. Deficiency of Magnesium can result in; muscle tension, muscular weakness, lethargy, poor sleep, low mood, mental confusion, decreased attention span and irritability.