"Allison Westfahl's Core Envy will tone and sculpt your abs, back, stomach, and sides--and build a strong, sexy core you'll love showing off. Her Core Envy program solves the problems other abs programs ignore with a three-part approach to slim down and tone up. You'll clean up your diet, fire up your metabolism, and tighten up all the muscles of your core without a gym or equipment. In just three weeks, you'll start seeing results,"--Amazon.com.

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