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the flat-abs-fast secret
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shhhh...it's a stability ball. try these six moves and you'll have a tone tummy in no time
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belly buster
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start in a plank
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workouts
2013
january 18
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by erin kurdyla
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© condé nast
1 balls
sizematters standard are 55
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1
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side sculptor
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works: obliques
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2
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works: abs
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lie faceup
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3
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works: abs
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4
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core climber
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works: abs
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5
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works: obliques
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6
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waist definer
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works: obliques
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topicsabsflat abssculptstability balltoningworkouts