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Mark Verstegen's Core Workout—Week Two
Workout A: Plank—Arm Lift

February 25, 2011

Without moving your torso, lift your left arm up and slightly to the left and hold for one to two seconds. Return to start position and repeat with right arm. Keep your stomach tight throughout the movement. Do eight reps on each side.

See more of Mark Verstegen's Core Workout video demonstrations.

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