Magnesium is an important electrolyte and is essential for athletes. It is critical for nerve and muscle function and is essential for maintaining bone health. Magnesium also acts in all the soft tissues cells and enzyme systems. It is involved in blood pressure, immunity, energy and insulin metabolism. Ensuring sufficient magnesium helps with optimal recovery, oxygen uptake and energy production. A magnesium deficiency may result in muscle spasms, nerve twitches, cramping and fatigue.