MAG, or magnesium, is a chemical element with the symbol Mg and atomic number 12. It is a lightweight, silvery-white metal that is essential for many biological processes. Magnesium is commonly found in minerals and is crucial for human health, playing a key role in muscle function, nerve transmission, and energy production. In addition to its biological importance, magnesium is widely used in various industries. It is a key component in the production of aircraft and automobiles due to its strength-to-weight ratio. Furthermore, magnesium compounds are used in fertilizers, fireworks, and as a reducing agent in chemical reactions.