Magnesium's job description: intracellular mineral transport, fat metabolism, neurotransmission and neurotransmitter synthesis, glucose metabolism, skeletal muscle contraction/relaxation, relaxes nervous system, cellular energy production, hormone and protein synthesis, white blood cell synthesis, digestive enzyme synthesis, arterial wall ontraction/relaxation, stomach HCl (hydrochloric acid) production, makes immune antibodies, bowel motility.