Magnesium also plays a role in similar functions of muscle and nerve function, protein synthesis, and bone integrity, as well as being a catalyst for over 300 enzymatic reactions that regulate certain physiological functions in the human body. While magnesium is an essential nutrient, our bodies must receive it from either foods or supplementation. Supplementation can help ensure optimal levels are being met to maintain optimal bodily function. These can include bone and muscle integrity as well as digestion and ability for relaxation and recovery to take place.