Magnesium is the fourth most abundant mineral in the human body and is involved in over 300 biochemical processes as well as over 600 chemical reactions. A majority of it is found in bone and the rest in muscles, soft tissues and fluids, including blood. It's in every cell, so your cells can't function without it.
Magnesium also plays a role in the active transport of calcium and potassium ions across cell membranes, a process that is important to nerve impulse conduction, muscle contraction, and normal heart rhythm.
You may have heard of people using magnesium to boost exercise performance, to recover from intense exercise, or to help with restless leg symptoms at night. But did you know it plays a critical role in brain function and mood? It does it all: energy production, oxidizing nutrients with enzymes, and glycolysis (the breakdown of glucose). It contributes to the structural development of bone and is required for the synthesis of DNA, RNA, and the antioxidant glutathione. You can see why it is important to have enough of this mineral and have it functioning properly in the body.
[Photo: Warut Roonguthai, CC BY-SA 3.0 <https://creativecommons.org/licenses/by-sa/3.0>, via Wikimedia Commons]