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This makes it a bit tricky and tougher with the larger 45 lb plate (which is why you need to be somewhat stronger than being able lift only 45 lbs on dumbell presses). (hardgainermusclebuilding.com)
Box step - up with overhead press: With dumbells in a shoulder press position and lift them up while the foot is anchored in the box, raise the other leg while lifting the weights up in a continuos move once you master the move. (martamontenegro.com)