Recent content by john99a

  1. Vitamins

    A few hard training sessions a week is more than enough for most people to start going into a negative magnesium balance. Especially with the high amount of stressors that we are subjected to today, that we weren't in our evolutionary past. Then add the fact that an exceedingly large part of...

  2. Vitamins

    Exactly. High blood calcium increases urinary magnesium excretion. And I'm pretty sure I've read some studies that state they also compete for mineral transport in the small intestine. And another thing many athletes probably didn't know, caffeine's affect on urinary magnesium (and other...

  3. Vitamins

    Yeah. Thats why I supplement with a highly absorbable form of magnesium as well. It's funny though, you'd be surprised how little magnesium you get even through a "proper" diet. Especially if you consider all the factors that influence magnesium absorption and excretion.

  4. Vitamins

    Quite the contrary. The RDA is for NORMAL people, not athletes. Even the "higher end" as you put it. Did you know that "The synthesis of ATP by intact respiring mitochondria requires the presence of oxygen, magnesium, substrate, ADP and inorganic phosphate." "Significant increases in urinary...
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