The Magic of Magnesium: A Mighty Mineral Essential to Health
Muscle cramps/pain are a primary indicator, and the fix is relatively easy—try a good supplement (
not magnesium oxide—get taurate, citrate, or chelated) or epsom salts, or magnesium lotion (you can get Morton Epsom Lotion at most pharmacies, discount stores, Amazon, etc. for a few bucks).
Results should be fairly quick—within hours.
There's a ton of info in the archives.
Doc