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Old 10-24-2006, 09:26 PM  
AnneT
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Join Date: Aug 2003
Posts: 270
It's better to do it all at once. But it's better to 15 and 15 than nothing. Sometimes life gets in the way of cardio.

BTW the 20 minute rule is a bit of a myth, apparently. The first 20 minutes DO count.
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