How much calcium do I need per day if I exercise?

Some studies warn that people who exercise vigorously need to get proper amounts of calcium -- 1,000 to 1,600 mg a day -- to ensure that enough calcium is available for the bones to build density. During intense training, large amounts of calcium are lost through perspiration. For every hour of exercise you do, add 200 mg more calcium that day.

For every 12-ounce can of caffeinated beverage such as Diet Coca-Cola, and for every 4-ounce cup of coffee, add 20 mg more calcium a day.

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