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Exercises to Build Muscle - Exercising Without Dumbbells
Classic exercises you can do almost anywhere.
O, The Oprah Magazine  |  January 23, 2012
Planks Illustration: mckibillo
Planks

These engage the entire core (including the lower back), while crunches primarily target the belly. Can you hold the pose for five seconds? Count that as one set. As you get stronger, hold it longer.
Printed from Oprah.com on Tuesday, May 21, 2013
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