The Perfect Posture Myth Blog Banner
“Shoulders back, chest up.” It may be the most common cue we use, and of course, it’s coming from a place of wanting to ensure safety through good technique. We say it because a tall, open posture looks strong, and because someone once said it to us.
The trouble is that a cue is only as good as the theory behind it. If the shape of the spine really drives back and neck pain, coaching posture makes perfect sense. If it does not, we may be spending session time, and our clients’ efforts, on the wrong thing.
Over the past decade, researchers have tested that idea from many different angles, from what clinicians believe to what happens when people are “straightened” up. The results are far less promising than the cue suggests.
Posture advice feels like common sense. A slumped spine looks tired and an upright one looks capable, so it is easy to assume the upright one is also healthier.
A group of physiotherapy researchers set out the problem in a short paper titled “Sit Up Straight”: Time to Re-evaluate (Slater et al., 2019). Their argument is that the belief that spinal pain is caused by sitting, standing or bending “incorrectly” has very little real evidence behind it, yet a large posture industry has grown around it, selling braces, apps and correction programmes. They also point out that health professionals pass the same message on, often without realising how weak the evidence is.
To see how deep the belief runs, one research team asked 544 physiotherapists to choose the best sitting and standing posture from a set of photographs (Korakakis et al., 2019).
Almost 94 per cent said teaching optimal posture was considerably or very important. The answers clustered around upright postures with a curve in the lower back, and slumped sitting was almost never chosen.
One of the most interesting things is how they justified their choices. Physiotherapists who picked different postures gave the same reasons for them, talking about natural curves and muscle activation whichever picture they had chosen. The authors concluded that this reflects widely held, fairly stereotyped beliefs rather than evidence that shows one particular posture leads to better health.
None of this makes those clinicians bad at their jobs. It shows how a cultural idea can travel through an entire profession and as a result, feel like science.
You may well ask, has anyone looked into that link. And they have, many times.
An umbrella review screened 4,285 publications and pulled together 41 systematic reviews on whether posture and physical load cause low back pain (Swain et al., 2020). Those reviews covered sitting and standing for long periods, bending and twisting, awkward positions and heavy physical work.
They found associations in some places and none in others. Reviews that only included prospective studies, the kind that follow people forward in time and are better at showing cause and effect, were the least able to reach a consistent conclusion. The evidence that any of these factors comes before a first episode of back pain, or that more exposure means more pain, was mixed.
Their conclusion was quite blunt. And that was despite dozens of reviews, there is no consensus that posture or physical exposure causes low back pain. Association has been documented, but it does not explain why people end up in pain.
Neck pain gets the same treatment, usually blamed on phones. “Text neck” has become a common phrase, and the picture of a head tipped forward over a screen makes it easy to believe.
A research group in Rio de Janeiro tested it twice. The first study looked at 150 young adults aged 18 to 21 and found no association between neck posture while texting and neck pain, whether posture was judged by the participants or by physiotherapists (Damasceno et al., 2018).
The second study was larger and more precise. It measured the actual neck flexion angle of 582 adults aged 18 to 65 while they typed on their phones, both standing and sitting, using a dedicated range-of-motion device (Correia et al., 2021). The angle was not associated with whether people had neck pain, how often they had it or how bad it got.
Long hours on a phone are not good for anyone, but the angle of the neck turns out to be a poor predictor of who hurts.
This is where the research gets useful for us. Our question is, can we change posture with exercise? Yes, quite easily.
A 2026 meta-analysis pooled 28 randomised trials of corrective exercise in 901 people labelled with “upper crossed syndrome”, the familiar pattern of a forward head, rounded shoulders and an increased upper back curve (Khorramroo et al., 2026). The programmes produced large improvements in head and shoulder position and in the curve of the upper back.
The effects on pain and function were inconclusive. The authors were careful to say that while corrective exercise addresses the measurable alignment, whether that turns into less pain or better function is uncertain.
So the exercises did what they were designed to do. People looked different in the photographs at the end of the trial. They did not reliably feel better or move better as a result.
In short, you can change someone’s posture without reliably changing their pain or how well they move.
There is a second problem with posture correction as well. Holding yourself rigidly upright is a movement habit too, and not always a helpful one.
People in pain often move in a guarded way. They brace their trunk and avoid bending, because they believe bending is dangerous. That protective pattern is understandable, but over time it can keep the pain going.
The RESTORE trial tested an approach built to change just this. Cognitive functional therapy targets the beliefs and behaviours that feed into pain, including the protective ways people move when they are worried about their back. It was compared with usual care in 492 adults with chronic, disabling low back pain across 20 physiotherapy clinics (Kent et al., 2023).
With up to seven sessions over 12 weeks and one booster session, people improved by 4.6 points on a 24-point disability scale compared with usual care, and the effect held at a year. It also cost considerably less than usual care.
The point for us is that one of the most successful back pain programmes of recent years spends much of its time helping people relax and stop treating their spine as fragile. Telling a worried client to pull their shoulders back and brace their core can push in the opposite direction.
Now, you may well be asking yourself, if posture correction does so little for pain, why do so many people swear it helped them? Well, there are a few explanations.
Most posture programmes involve exercise, and exercise on its own tends to reduce pain for a lot of people. A client who starts doing rows, band pull-aparts and upper back work three times a week is getting stronger and moving more, whatever the stated reason for the programme.
There is also the attention. A client who feels listened to and has a clear plan usually feels more in control of their pain. That sense of control helps as well.
And pain naturally goes up and down. Many people seek help when their symptoms are at their worst, so some improvement over the following weeks would happen with or without the correction.
That doesn’t mean you should stop the upper back strength work. It just means being a bit more careful about why you tell clients they’re doing it.
If there is no single correct posture, what should clients aim for? The answer from most researchers is variety.
Bodies do not mind being slumped, upright, twisted or curled. What they don’t tolerate is staying in any one position for a long time without a break, especially when the person is already sore, stressed or lacking a good night’s sleep. A client who changes position often and has the capacity to move through a full range will usually feel better than one who holds a “perfect” shape all day.
This is where movement capacity comes in. It is the ability to get into and out of a wide range of positions comfortably and with control, rather than a measure of how far a joint can be pushed. It describes what someone can do, which is far more useful than a description of how they look while standing still.
So what does coaching for movement capacity look like in practice? It looks less like drilling one ideal position and more like giving the body lots of positions to own.
A warm-up might move through deep squats, half-kneeling rotations, reaching overhead from different stances and getting down to the floor and back up. The main session can use a mix of bilateral and single-leg work, pushes and pulls in different directions, and loaded carries that ask the trunk to stay steady without bracing like a statue.
Rounded positions do not need to be banned either. A client who has been taught that bending their spine is risky can benefit from slowly loaded, well-controlled bending, such as a light Jefferson curl or reaching a kettlebell from a low box. Build it gradually and keep it comfortable, and the movement won’t feel “dangerous”.
Give your clients some homework as well. This would include standing up every half an hour, changing position when you notice yourself getting stiff, and walking whenever you can. None of which requires perfect form.
A lot of fitness assessments still start with a posture check. The client stands against a wall or in front of a grid, and the coach notes a tilted pelvis, a rounded upper back or one shoulder higher than the other.
Now, there’s nothing wrong with looking. The problem comes when what you see turns into a story you feed back to your clients: your pelvis is tilted, so your back hurts. This leaves them believing their body is out of alignment, and every twinge from then on confirms it.
Assessment is more useful when it asks what the client can do. Can they squat to a chair and stand without using their hands? Can they reach overhead, rotate, bend to the floor and come back up? Do any of those movements bring on their symptoms, and does the symptom change with a small adjustment?
It is also worth watching how a client moves when they are not being assessed. The way someone gets off the floor after a stretch, or picks up their bag at the end of a session, often tells you more about their confidence than any formal test. Guarded, careful movement in those unguarded moments is a useful sign that fear, rather than a lack of range, is the thing holding them back.
Those questions give you a starting point for your programming.
Words carry a lot of weight with people in pain. Phrases like “your spine is out of alignment“, “bad posture” or “weak core” sound like explanations, and clients repeat them for years.
The same message can be delivered in a way that builds confidence instead. Compare “you need to fix your posture” with “your body is strong and adaptable, so let’s give it more ways to move”. The second version still leads to exercise, but it does not suggest the client is broken.
Below is a quick reference for some of the most common posture beliefs and what you can say instead.
| What Clients Are Told | What the Evidence Shows | What to Coach Instead |
|---|---|---|
| Slouching causes back pain | No consensus that posture causes low back pain | Change position often and keep moving through the day |
| Text neck causes neck pain | Neck angle on a phone was not linked to neck pain in 582 adults | Breaks, movement variety and general strength |
| Rounded shoulders need correcting | Corrective exercise changes the angle but not reliably the pain | Train what the client wants to be able to do |
| Bending your back is dangerous | Guarded, braced movement can keep pain going | Relaxed, confident movement, progressed gradually |
| There is one correct way to sit | Clinicians cannot agree on what it is | The best posture is the one you change out of next |
None of this means posture never tells you anything. A sudden change in how someone holds themselves, a fixed curve that will not move at all, or posture changes alongside numbness, weakness or unexplained weight loss all deserve a referral to a GP or physiotherapist.
Posture also has a practical role when a client is lifting load. A stable base and a spine that can control the weight are both part of performing the lift well.
And if a client simply wants to stand taller because it makes them feel more confident, that is a perfectly good goal. Strength training for the upper back and shoulders can help with that. Just treat it as a preference rather than a cure.
Many of us have clients that are convinced their pain comes from the way they sit or stand. The research however, tells us that may not be right.
By assessing movement rather than alignment, choosing language that calms rather than alarms, and giving people more ways to move through their day, we can help clients feel confident in their bodies again, rather than worried about how they look. It means programming strength work that helps them do the things they care about, and plenty of variety rather than one held position.
It also means being honest. When a client asks whether their posture is causing their pain, a good answer is that it is probably one small part of a much bigger picture, and that the best thing they can do is keep moving, get stronger and stop worrying about the shape of their spine.
Correia, I.M.T., Ferreira, A.S., Fernandez, J., Reis, F.J.J., Nogueira, L.A.C. and Meziat-Filho, N. (2021). Association between text neck and neck pain in adults. Spine, 46(9), pp.571-578. Click here to review the full research article.
Damasceno, G.M., Ferreira, A.S., Nogueira, L.A.C., Reis, F.J.J., Andrade, I.C.S. and Meziat-Filho, N. (2018). Text neck and neck pain in 18-21-year-old young adults. European Spine Journal, 27(6), pp.1249-1254. Click here to review the full research article.
Kent, P., Haines, T., O’Sullivan, P., Smith, A., Campbell, A., Schutze, R., Attwell, S., Caneiro, J.P., Laird, R., O’Sullivan, K., McGregor, A., Hartvigsen, J., Lee, D.A., Vickery, A., Hancock, M. and RESTORE trial team (2023). Cognitive functional therapy with or without movement sensor biofeedback versus usual care for chronic, disabling low back pain (RESTORE): a randomised, controlled, three-arm, parallel group, phase 3, clinical trial. The Lancet, 401(10391), pp.1866-1877. Click here to review the full research article.
Khorramroo, F., Rostami, M. and Bafrouei, M.J. (2026). Corrective exercises strongly improve posture but fail to produce consistent clinical or functional benefits in patients with upper crossed syndrome: a systematic review and meta-analysis of randomized controlled trials. BMC Sports Science, Medicine and Rehabilitation, 18(1). Click here to review the full research article.
Korakakis, V., O’Sullivan, K., O’Sullivan, P.B., Evagelinou, V., Sotiralis, Y., Sideris, A., Sakellariou, K., Karanasios, S. and Giakas, G. (2019). Physiotherapist perceptions of optimal sitting and standing posture. Musculoskeletal Science and Practice, 39, pp.24-31. Click here to review the full research article.
Slater, D., Korakakis, V., O’Sullivan, P., Nolan, D. and O’Sullivan, K. (2019). “Sit up straight”: time to re-evaluate. Journal of Orthopaedic and Sports Physical Therapy, 49(8), pp.562-564. Click here to review the full research article.
Swain, C.T.V., Pan, F., Owen, P.J., Schmidt, H. and Belavy, D.L. (2020). No consensus on causality of spine postures or physical exposure and low back pain: a systematic review of systematic reviews. Journal of Biomechanics, 102, 109312. Click here to review the full research article.
If a client has spent years trying to hold the “correct” posture, the most useful thing you can offer them is more ways to move, freely and with greater confidence.
Our new Movement & Mobility Course covers the difference between mobility, flexibility and movement capacity, how the nervous system controls stiffness, pain science and how to assess range joint by joint. It gives you a clear, evidence-based alternative to posture correction that you can use with every client on your books.
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