Here's something you'll love to learn: Your shoulders and upper back tend to carry less fat than the rest of your body, so the right exercises can give this area a nearly instant makeover, says Ramona Braganza, a celebrity trainer who has worked with stars such as Anne Hathaway and Jessica Alba. Braganza's workout, below, hits every major upper-body muscle and will help stabilize your shoulder joints, improve your posture, and build that strong, toned look you're after.

Using five-to eight-pound weights, perform 15 to 20 reps of each exercise and go from one move to the next with little or no rest between. Do two or three sets three times a week.

Reverse Fly

Step 1

Step 2

Grab a pair of dumbbells and stand with your feet hip-width apart and your knees bent. Bend forward at the hips and let your arms hang straight down from your shoulders, palms facing.
Raise both arms out to the sides as you squeeze your shoulder blades together. Return to start. That's one rep.

This move works:
Shoulders, Upper Back

Photo Credit: Josh McKible

Standing Dumbbell Curl

Step 1

Step 2

Grab a pair of dumbbells and let them hang at arm's length next to your sides. Turn your arms so that your palms face forward.
Without moving your upper arms, bend your elbows and curl the dumbbells as close to your shoulders as you can. Pause, then slowly lower the weights back to the starting position. Each time you return to the starting position, completely straighten your arms.

Work your body with these 2-in-1 exercises

This move has been excerpted from The Women's Health Big Book of Exercises by Adam Campbell.

This move works:
Biceps

Photo Credit: Beth Bischoff

Dumbbell Cross Jab

Step 1

Step 2

Stand with your feet a bit wider than hip width and knees slightly bent. Hold the dumbbells at chest height with elbows bent and palms facing each other. Extend your left arm across your body until the weight is in line with your right shoulder.
As you return to start, repeat with the right arm. That's one rep.

This move works:
Biceps, Shoulders, Triceps

Photo Credit: Josh McKible

Dumbbell Lying Triceps Extension

Step 1

Step 2

Grab a pair of dumbbells and lie face up on a flat bench. Hold the dumbbells over your head with straight arms, your palms facing each other.
Without moving your upper arms, bend your elbows to lower the dumbbells until your forearms are beyond parallel to the floor. Pause, then lift the weights back to the starting position by straightening your arms.

This move has been excerpted from The Women's Health Big Book of Exercises by Adam Campbell.

This move works:
Shoulders, Triceps, Upper Back

Photo Credit:

Get Sleek, Sexy Arms

Reverse Fly

Standing Dumbbell Curl

Dumbbell Cross Jab

Dumbbell Lying Triceps Extension