Most Concentration Curls In One Minute Using A 54.6-Pound Dumbbell

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London, England / May 11, 2015

Dnb Boss performed 30 concentration curls in one minute using a 54.6-pound dumbbell

 - must follow form of current record setter
 - must provide video evidence

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Tags: mostsportsexercisefitnessdumbbellconcentration curl

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