The (15 Minute) Bye-Bye Arm Jiggle Workout. Hold a dumbbell in each hand and stand with your feet shoulder-width apart, arms at your sides, palms in. With arms straight but not locked, raise the weights diagonally in front of you, so that your arms form a V shape, until your arms are parallel to the floor. Hold for one second, then return to the starting position. Do 12 to 15 reps.