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Old 04-06-2007, 05:28 PM   #3
Donna
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Join Date: Jul 2006
Location: Shingle Springs, CA - near Sacramento
Posts: 295
Hi Racheal,

According to this article, every time a muscle contracts it sends out the protein IGF-1 into the bloodstream. This is all very confusing. I just want to know if I should be exercising or not - It makes intuitive sense to exercise and be healthier - I just want to be sure.

Thanks,

Donna
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