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<http://www.providencejournal.com/apps/pbcsi.dll/bilde?Site=PJ&amp;Date=20130522&amp;Category=LIFESTYLE&amp;ArtNo=305229945&amp;Ref=AR>
<http://www.providencejournal.com/features/lifestyle/health-fitness/20130522-simple-stuff-for-a-great-core-workout.ece>