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In this instructional segment, fitness trainer Eric Roberts outlines three common mistakes to avoid when performing dumbbell bicep curls. First, he emphasizes keeping the elbows forward rather than allowing them to kick back, ensuring proper arm alignment. Second, he advises against letting the shoulders round forward; instead, the shoulders should be pulled down into the back pocket to maintain a stable torso. Third, he cautions against excessive wrist flexion during the curl, recommending that the palms start facing the wall and rotate upward as the weight is lifted. These cues aim to improve curl mechanics, reduce injury risk, and maximize bicep activation.










