Magnesium, What Is It Good For?
Magnesium is influential in more than 300 metabolic processes. This makes it one of the most important (if not the most important) mineral of all. It’s actually more important than calcium, potassium or sodium and even regulates how all three of them work inside the body.
Dr. Norman Shealy, a prominent neurosurgeons and a pioneer in the development of pain medicines, has said “Every known illness is associated with a magnesium deficiency” and “magnesium is the most critical mineral required for electrical stability of every cell in the body.”
And Dr. Mark Hyman writes, “A deficiency in this critical nutrients makes you twice as likely to die as other people, according to a study published in The Journal of Intensive Care Medicine. It also accounts for a long list of symptoms and diseases — which are easily helped and often cured by adding this nutrient. In fact, in my practice, this nutrient is one of my secret weapons against illness. Yet up to half of Americans are deficient in this nutrient and don’t know it.”
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Wish I'd heard of that when I used to ride. I'd have shovelled it into the nasty mare who liked to dump me off and chase me around trying to bite and bash me.
Cramp Gone! but was it the Vit D or the Magnesium...probably both!
Magnesium blood tests
Magnesium supplementation - transdermal application might not give sufficient plasma concentrations compared to oral route 
Vit D and Magnesium. Very important !
