The heart runs on magnesium and potassium, while calcium is needed to alkalize the blood and tissues and many other things. When the body drags magnesium out of the bones to alkalize and that calcium can become bone spurs, kidney stones or deposits elsewhere. The answer to all this is to be alkalized so it will not happen and taking calcium magnesium supplements will help the body maintain proper ph. Minerals are vitally important for health, and vitamins are useless without them.