Tone up like Gwyneth with the high-rep moves below.Try It Start toning your arms like Paltrow with these arm workouts. Stand with feet shoulder-width apart, knees slightly bent, holding a 1-3 pound dumbbell in each hand, arms straight down at sides, palms facing back. Lift arms straight back about 2 feet behind you and return. Do 30 reps. Stand with feet slightly more than shoulder-width apart, holding a 1-3 pound dumbbell in each hand. Bring right elbow to hip by bending to the right from waist. Extend left arm overhead, keeping shoulders down and return. Do 50 reps and then switch sides and repeat.