Shoulder Shrug Exercise: Benefits, Muscles Worked, Tips

A shoulder shrug is a simple move: with your arms straight, you lift your shoulders up toward your ears, pause, and lower them slowly. It mainly works the upper trapezius, the muscle that runs from the base of your skull and neck out to your shoulders.

This guide covers the muscles shrugs work, how to do one, how to pick a weight, a starter plan, which variation to choose, common mistakes, and what the research does and doesn’t show.

Shoulder Shrug at a Glance

What it is	Lifting your shoulders straight up toward your ears with your arms straight, then lowering them slowly.
Main muscle	Upper trapezius. In a 30-person EMG study, the unilateral shoulder shrug produced the highest upper trapezius activity of the 10 exercises tested (Ekstrom 2003).
Other muscles	Rhomboids and the forearm and grip muscles . The lower trapezius, levator scapulae and serratus anterior were also recorded in EMG studies.
Type	Isolation exercise, usually classed as a pull exercise.
Starting point	3 sets of 8 to 12 reps with 1 to 2 minutes of rest, using a weight that makes the last reps hard. If you’re new, 5 to 8 pound weights are enough to begin with.
Equipment	Dumbbells, barbell, cable, machine, resistance bands, or light household loads (see the variations table).
Check first or skip if	You have a recent injury, feel constant pain during the exercise, or have been told by a doctor to rest .

Shoulder Shrug Muscles Worked

The upper trapezius is the main target. In an EMG study of 30 healthy people (Ekstrom 2003), 10 exercises for the trapezius and serratus anterior were compared, and the unilateral shoulder shrug produced the greatest upper trapezius activity.

Other studies recorded the surrounding muscles, and some sources name helpers without measuring them.

Muscle	Role in a shrug
Upper trapezius	Main target
Lower trapezius	Helper
Levator scapulae	Helper
Serratus anterior	Helper
Rhomboids	Helper
Forearm and grip muscles	Hold the weight

Several of these studies had the arms out to the side, so they don’t describe exactly how a standard dumbbell shrug with your arms hanging down works. EMG also measures how active a muscle is, not whether it grows.

How to Do a Shoulder Shrug

Dumbbells are the usual choice, but Healthline says you can also use barbells or resistance bands, and WebMD notes you can use wrist weights, or even soup cans if you can grip them securely.

1. Stand tall with your feet about shoulder-width apart. Hold a dumbbell in each hand at your sides, palms facing in.
2. Keep your arms straight and your head and neck in line with your spine. Look straight ahead.
3. Lift both shoulders straight up toward your ears. Don’t bend your elbows and don’t roll your shoulders.
4. Pause briefly at the top.
5. Lower slowly back to the start in the same straight line. Men’s Health suggests taking at least two seconds.

On breathing, the sources disagree. Healthline says breathe in as you lift and WebMD says breathe out, so don’t stress over it.

Shrug Sets, Reps and Weight: A Starter Plan

This starter plan combines the numbers the sources agree on. It’s a reasonable place to begin, not a program proven for shrugs, because we found no study that tests sets and reps for shrugs specifically.

Variable	Starting point
Sets and reps	3 sets of 8 to 12 reps
Weight	A load you can lift about 8 to 12 times with good form. If you’re new, 5 to 8 pounds is enough to start.
Rest	1 to 2 minutes between sets
Tempo	Pause at the top, lower for at least 2 seconds
How often	Add shrugs to a session you already do. ACSM suggests beginners train 2 to 3 days a week.
Progression	When you can do 1 or 2 more reps than your target, add 2 to 10 percent to the load.

How to choose your weight

1. Pick a weight you think you can lift about 8 to 12 times with your arms straight and no rolling.
2. Do your first set. If the last reps felt hard but your form held, the weight is about right.
3. If you finished 12 reps and could have done several more, go heavier next time. If you couldn’t reach 8 reps, or you started bending your elbows to finish, go lighter.
4. Once you can beat your rep target by 1 or 2, increase the load by 2 to 10 percent (ACSM).

Not every source agrees on the numbers. Healthline says to work up to 3 sets of 20 reps, 4 times a week, and that hand weights of 15, 20 or 25 pounds or more can come later. We found no study comparing that approach with 8 to 12 reps for shrugs.

A 2017 meta-analysis of 21 studies found that heavier loads gave bigger gains in one-rep max strength, while muscle size gains were similar across loading ranges. The sets in those studies were taken to momentary failure, so “similar” only applies if your sets are hard.

Choose Your Shoulder Shrug Variation

No study we found ranks all the shrug variations, so choose by the equipment you have and what feels comfortable. Each one with a guide is linked in the table.

Variation	How it differs	Equipment	Guide
Dumbbell shrug	Arms hang at your sides with the palms facing in. This is the version described above.	Dumbbells	Dumbbell shrug guide
Incline dumbbell shrug	You lie chest-down on an incline bench with the dumbbells hanging below you, so the bench supports your chest.	Dumbbells, incline bench	Incline dumbbell shrug guide
Barbell shrug	You hold a barbell in front of your thighs with an overhand grip, so one bar moves both shoulders together.	Barbell	Barbell shrug guide
Smith machine shrug	The bar slides on fixed rails, so it moves along a set path.	Smith machine	Smith machine shrug guide
Behind-the-back barbell shrug	The bar is held behind your thighs. WebMD describes a behind-the-back dumbbell version and says it works the deltoids and middle trapezius as well as the upper trapezius. We couldn’t find research comparing it with a standard shrug.	Barbell	Behind-the-back barbell shrug guide
Cable shrug	Done with a bar or handles on a low pulley.	Cable station	Cable shrug guide
Machine shrug	A shrug machine, sometimes called a trap machine, has handles or a lever you hold. Muscle & Strength describes it as a way to isolate the traps, because the machine fixes the path of the movement.	Shrug machine	Included in our trap exercises guide
Light or home version	Healthline mentions resistance bands. WebMD mentions wrist weights, or soup cans if you can grip them securely.	Bands, wrist weights, household items	No separate guide

Arms-out shrug variations in the research

Researchers have tested shrugs with the arms held out to the side. In Pizzari 2014 (23 people without shoulder problems and 14 with multi-directional shoulder instability), a shrug with the arms 30 degrees out to the side gave higher upper and lower trapezius activity than a standard shrug with the arms down.

In Lee 2016 (17 people with scapular downward rotation syndrome), a “stabilization shrug” at 30 degrees produced a greater shoulder blade upward rotation angle than the other two shrugs tested, and a “frontal shrug” produced more upper trapezius activity than the preferred shrug. These studies were in a rehabilitation setting and measured muscle activity, not growth, so treat them as ideas to discuss with a physical therapist, not a reason to replace the standard shrug.

Common Shrug Mistakes and How to Fix Them

Mistake	What to do instead
Rolling the shoulders	Lift straight up and lower straight down. Men’s Health says rolling takes the work away from the traps.
Bending the elbows	Keep your arms straight. Men’s Health says bending them lets you move an overly heavy weight with extra momentum, which is a sign to go lighter.
Moving too fast	Pause at the top and lower slowly, taking at least two seconds.
Leaning forward or arching your lower back	Stand tall and keep your torso straight.
Looking down at the floor	Keep your neck neutral and look straight ahead. Men’s Health says your traps do the same job either way.

These are coaching cues from health and fitness sites, not study results. Safety: skip shrugs if you have a recent injury, feel constant pain during the exercise, or have been told by a doctor to rest .

If you’re trying them for neck or shoulder discomfort, start with no weight and a few reps so you don’t aggravate it . This is general information, not medical advice.

Where Shrugs Fit in Your Week

Most people add shrugs to a session they’re already doing:

• Pull or back day: after your main back exercises, such as pull-ups or the cable row.
• Shoulder day: after your pressing and raising work, such as the single-arm shoulder press and the dumbbell lateral raise.

Putting them later in the session follows ACSM’s advice to do larger muscle group and multi-joint exercises before smaller, single-joint ones. Shrugs mostly train the traps, and the WHO recommends muscle-strengthening on two or more days a week that covers all major muscle groups, so shrugs should be one piece of a wider routine.

Our video orap exercises:

Shoulder Shrug FAQ

Are shrugs good or effective?

They’re a simple way to train the upper traps directly, and EMG studies show the upper trapezius is highly active during shrugs . We didn’t find a study that tests shrugs on their own for trap size or strength, so we can’t tell you how much growth to expect. The usual training rules in the starter plan apply, as they do for any other lift.

What muscles do shrugs work?

Mainly the upper trapezius. The lower trapezius, levator scapulae and serratus anterior also take part in the studies we cite, and name the rhomboids as helpers. See the muscles table above for the details and limits.

Are shrugs a back or shoulder exercise?

Both, depending on who you ask. PureGym calls it an upper back exercise. The trapezius sits across your upper back and neck and moves your shoulder blade, so shrugs end up on a back day or a shoulder day depending on the program.

Are shrugs push or pull?

Pull. Most fitness sites, including PureGym, classify shrugs as a pull exercise because the weight is lifted up toward your body instead of pushed away from it. That’s a gym convention, not a research finding, and nothing stops you from doing them on a shoulder day.

Are shrugs compound or isolation?

Isolation. Your arms stay straight and the work comes from lifting your shoulders, and exercise databases such as Muscle & Strength list shrugs as an isolation movement.

Which shrug variation is best?

We found no study that ranks them all. The studies we cite compared only a few: Pizzari 2014 found an arms-out shrug gave higher upper and lower trapezius activity than a standard shrug in a rehabilitation setting. For most people, the best choice is the one you can do with good form using the equipment you have. The variations table above lists each option.

How many sets and reps of shrugs should I do?

A common starting point is 3 sets of 8 to 12 reps with 1 to 2 minutes of rest (WebMD, ACSM). Healthline suggests starting with 3 sets of 10 reps. See the starter plan above for weight and progression.

How often should I do shrugs?

ACSM suggests beginners train 2 to 3 days a week, and you can add shrugs to one of those sessions. Healthline says to work up to 4 times a week over time. We found no study that tests shrug frequency, so start low and see how you recover.

Are shrugs the same as upright rows?

No. In a shrug your arms stay straight and your shoulders do the lifting. An upright row is a different movement that bends the elbows to pull a weight up the front of your body. We found no study comparing the two for trap results, so we can’t say one is better.

Are shrugs better than rows?

They do different jobs. Shrugs are an isolation exercise for the traps (Muscle & Strength). Rows, such as the cable row, train the upper back with more movement at the elbows. Many programs use both, and we found no study that says one replaces the other.

Can I do shrugs without weights or at home?

Yes. Healthline says shrugs can be done with or without weights, and mentions resistance bands. WebMD mentions wrist weights, or soup cans if you can grip them securely. Without weight the movement is gentler, so it suits a first try or a warm-up, and you can add load later.

Are shrugs good for women?

The sources we cite give the same technique and starting advice for everyone, and the ACSM and WHO guidance applies to all adults. None of them split shrug advice by sex, so we have nothing separate to add. Start with the weight that suits your current strength.

Do shrugs build a bigger neck?

Shrugs train the upper trapezius and levator scapulae, which sit at the back and side of the neck. We found no study showing that shrugs change neck size, so we can’t promise a result.

Are shrugs good for posture?

Healthline and WebMD both say stronger traps help your posture, but we couldn’t find a study that tests shrugs for posture, so we won’t promise it. The one shrug study on shoulder blade alignment (Choi 2015) had 20 people with a specific alignment problem and measured changes right after each exercise. It can’t tell you what happens to everyday posture over weeks or months.

Are power shrugs different from regular shrugs?

The shrug motion is part of Olympic weightlifting lifts such as the power clean. A 2021 study of 20 trained men measured upper trapezius activity during the power clean at 50, 70 and 90 percent of their one-rep max (Nagao 2021). It didn’t test a standalone power shrug exercise, so we can’t compare it with a standard shrug.

Sources

• Ekstrom RA, Donatelli RA, Soderberg GL. Surface electromyographic analysis of exercises for the trapezius and serratus anterior muscles. J Orthop Sports Phys Ther. 2003;33(5):247-258. A 30-person EMG study of 10 exercises.
• Choi WJ, Cynn HS, Lee CH, et al. Shrug exercises combined with shoulder abduction improve scapular upward rotator activity and scapular alignment in subjects with scapular downward rotation impairment. J Electromyogr Kinesiol. 2015;25:363-370. A 20-person EMG study.
• Pizzari T, Wickham J, Balster S, Ganderton C, Watson L. Modifying a shrug exercise can facilitate the upward rotator muscles of the scapula. Clin Biomech. 2014;29(2):201-205. An EMG study of 23 people without shoulder problems and 14 with multi-directional shoulder instability.
• Lee JH, Cynn HS, Choi WJ, Jeong HJ, Yoon TL. Various shrug exercises can change scapular kinematics and scapular rotator muscle activities in subjects with scapular downward rotation syndrome. Hum Mov Sci. 2016;45:119-129. A 17-person study.
• Nagao H, Ishii Y. Characteristics of the shrug motion and trapezius muscle activity during the power clean. J Strength Cond Res. 2021;35(12):3288-3295. A 20-person study of the power clean.
• Zebis MK, Andersen LL, Pedersen MT, et al. Implementation of neck/shoulder exercises for pain relief among industrial workers: a randomized controlled trial. BMC Musculoskelet Disord. 2011;12:205. A 537-person trial of a program that included shrugs.
• American College of Sports Medicine. Position stand: progression models in resistance training for healthy adults. Med Sci Sports Exerc. 2009;41:687-708. Used for the beginner load (8 to 12 repetition maximum), training frequency, rest, progression and exercise order. It does not give a number of sets for shrugs.
• Schoenfeld BJ, Grgic J, Ogborn D, Krieger JW. Strength and hypertrophy adaptations between low- vs. high-load resistance training: a systematic review and meta-analysis. J Strength Cond Res. 2017;31:3508-3523.
• Bull FC, Al-Ansari SS, Biddle S, et al. World Health Organization 2020 guidelines on physical activity and sedentary behaviour. Br J Sports Med. 2020;54:1451-1462.
• Healthline. Shoulder Shrugs: Muscles Worked, Benefits, and How To. Used for technique, beginner weights, sets and reps, barbells and resistance bands, breathing, using no weight, and posture claims. Last reviewed June 2019. This is a health information site, not research.
• WebMD. How to Do Shoulder Shrugs. Medically reviewed November 2024. Used for technique, beginner weights, sets and reps, wrist weights and soup cans, keeping the elbows straight, the rhomboids, the behind-the-back dumbbell note, posture claims and when not to do shrugs. This is a health information site, not research.
• Men’s Health. How to Do Shrugs to Grow and Strengthen Your Traps Muscles. Published November 2025. Used for the lowering tempo, the common mistakes and how shrugs fit with other lifts. This is a magazine article with coaching opinions, not research.
• PureGym. How To Do Shrugs. Used for the push or pull and upper back classification, the rhomboids and the forearm muscles. This is a gym chain’s exercise guide, not research.
• Muscle & Strength. Machine Shrug. Used for the machine shrug description and for classing shrugs as isolation. This is an exercise database, not research.