Why do muscles cramp up?

Well, to put it simply, when you exercise, your muscles have to do a lot of quick-fire contraction and relaxation.  If there is too much Calcium (Ca), which is the element that causes contraction of the muscles and too little Magnesium (Mg), the element that causes relaxation of the muscles, the result will be muscle cramps and lactic acid buildup.  Without Mg the muscles can’t relax, hence you get muscle spasms or cramps where the muscle is continually contracting and that contraction cannot release into relaxation. Continue reading Magnesium and Working Out →