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Wal-Mart.com USA, LLC
Wal-Mart.com USA, LLC

Adults and kids alike can benefit in myriad ways from more and better sleep

4 September 2010, 10:13 pm

Close to midnight, when I probably should have been sleeping, I was instead trying to figure out my heart-rate zones. They're a way of maximizing workouts, and I wanted to get mine right. But I just couldn't, even though a few hours earlier I thought I understood the concept just fine.... Read More »

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