Last time I did a deep dive into this, found a few papers suggesting that it can be any salt imbalance (potassium, magnesium or calcium) that triggers cramps.
However, potassium and calcium are a lot more prevalent in standard diets so it's usually lack of magnesium that is the culprit.
However, potassium and calcium are a lot more prevalent in standard diets so it's usually lack of magnesium that is the culprit.