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genezapharmateuticals
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puritysourcelabs
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napsgeargenezapharmateuticals domestic-supplypuritysourcelabsUGL OZUGFREAK

bicep inner peak

the wider your grip is during any curl means your working the inner bicep more, the closer the grip the more you work the outer biceps. to add peak do concentration curls but curl to your shoulder and not to your chest... to the shoulder works more of the inner part, to the chest works more of the outer part
 
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