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Bio Testosterone XR It may help to change up the grip you use for the back. Use a mixed or staged grip to perform rack pulls or deadlifts to achieve greater strength. Staggered grips help twist the weight bar in one direction, working your muscles a certain way, while an underhand grip twists the weight bar in the opposite direction, working your muscles differently. That will stop the bar from going all over the place, while in your hands.
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