Health on TIME.com
Science Says This Is the Best Motivation to Exercise
People primed to be competitive went to 90% more classes than those who weren’t
Published on November 1, 2016 at 10:46PM
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Published on November 1, 2016 at 10:46PM
Shared at 0 shares/hour
Read more: http://ift.tt/2eamrh8
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