When you want to isolate specific muscle groups in the arms, using dumbbells is truly effective — get ready to feel the burn! Grab some weights and work your arms. shoulders. and upper back! find more relevant stuff: victoriajohnson.w...

When you want to isolate specific muscle groups in the arms, using dumbbells is truly effective — get ready to feel the burn! Grab some weights and work your arms. shoulders. and upper back! find more relevant stuff: victoriajohnson.w...

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