If you have 10 minutes to spare, you have enough time to tackle this effective core workout that puts you through two rounds ...
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Your core routine needs more than crunches. Use these abs exercises to strengthen your six-pack.
Story by Brett Williams, NASM, Ebenezer Samuel, C.S.C.S. AB TRAINING SHOULD be more than just an afterthought, and the last 10 minutes of your workout routine should not be just reserved for crunches.
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