It is very hard to find good info on this. I had to piece it together from multiple sources. But here's GPT-4 has to say on this topic: Magnesium plays a cruci

It is very hard to find good info on this. I had to piece it together from multiple sources. But here's GPT-4 has to say on this topic: Magnesium plays a crucial role in the relaxation of muscles at a cellular level. Magnesium ions are necessary for the proper functioning of the muscle cell's contractile machinery. The muscle contraction and relaxation process is regulated by the movement of calcium ions into and out of the muscle cell. When a nerve impulse reaches a muscle cell, it triggers the release of calcium ions from the sarcoplasmic reticulum (a type of intracellular membrane) into the cytosol (the fluid inside the cell). This causes the muscle filaments (actin and myosin) to bind together, resulting in muscle contraction. To relax the muscle, the calcium ions need to be pumped back into the sarcoplasmic reticulum. This process is facilitated by the protein called Calcium-ATPase. Magnesium ions are necessary to activate this protein and pump the calcium ions back into the sarcoplasmic reticulum. Additionally, magnesium ions also inhibit the release of calcium ions from the sarcoplasmic reticulum into the cytosol, helping to prevent muscle contraction. Therefore, adequate levels of magnesium are required to maintain normal muscle function and prevent muscle cramping and spasms. If magnesium levels are too low, muscles can become overactive, leading to cramps and spasms.