Posture is how you hold your body when you stand, sit and move. Good posture, in the simple sense, means your joints are stacked in a way that puts the least unnecessary strain on your muscles and ligaments. It is also one of the most visible parts of how you present yourself: an upright frame changes the impression of your height, shoulders and waist.
Popular advice about posture is confident and often overstated. This guide separates what is supported from what is not, shows how to assess yours, and gives a practical routine.
What "good" posture looks like
From the side, a plumb line (a vertical line) dropped from the ceiling through your body would pass roughly through:
- the ear canal,
- the middle of the shoulder joint,
- the middle of the hip,
- through or just in front of the middle of the knee joint, and
- just in front of the ankle bone.
That is the classic Kendall model. Real bodies vary, and small deviations are normal. The line is a reference, not a pass-fail test.
Common patterns
Forward head posture
The head sits in front of the shoulders. It is common in people who spend hours on phones and computers. It puts extra load on the muscles at the back of the neck and upper back. A frequently used measure is the craniovertebral angle (CVA), the angle between a horizontal line through the C7 vertebra and a line to the ear. Values below roughly 48 to 50 degrees are often called forward head, though studies use different cut-offs.
Rounded shoulders
The shoulders sit forward and inward, and the chest looks closed. The shoulder blade is rotated and tilted forward, the chest muscles are tight, and the upper-back muscles are weak or long. See how to fix rounded shoulders.
Increased thoracic kyphosis
The upper back looks more curved than typical. A curve of roughly 20 to 45 degrees in the thoracic spine is generally considered normal, and above about 45 degrees is often called hyperkyphosis. It becomes more common with age.
Anterior pelvic tilt
The pelvis tips forward, exaggerating the curve of the lower back and making the stomach appear to protrude. It is often blamed on tight hip flexors and weak glutes and abdominals. Some degree of tilt is normal, and the link between tilt and pain is weaker than popularly claimed.
Flat back and sway back
The opposite patterns: reduced curves in the spine, or hips pushed forward with the trunk shifted back. They are less common, and different exercises help.
How to check your posture
- Take a side photo. Stand naturally, with a phone at hip height about 2 to 3 metres away, side-on, whole body in frame. Do not adjust your posture; stand how you normally do.
- Draw the plumb line from the ankle upward. The Posture Analysis tool does this and measures the head-forward angle and shoulder offset.
- Take a front and back photo to check for a tilt in the shoulders or hips, and for one shoulder higher than the other.
- Retake it at a different time of day. Posture changes with fatigue, and a single photo can mislead.
What the evidence says
- Posture and pain. Reviews of studies find that specific postures, such as forward head or increased lumbar curve, are only weakly associated with neck or back pain. Many people with "poor" posture have no pain, and many with "ideal" posture do.
- What does matter: sitting or standing still for long periods, lack of strength and fitness, and how you load your body. Movement variety is the closest thing to a universal recommendation.
- Exercise beats braces. Trials of strengthening and mobility exercises show improvements in posture measures and, for some conditions, in symptoms. Evidence for posture correctors is limited.
- Posture can change with training, especially in people with weak upper-back muscles.
None of this means posture does not matter. It means the goal is comfortable, strong, varied movement rather than holding a rigid "perfect" stance.
A simple daily routine (10 minutes)
| Exercise | Purpose | Dose |
|---|---|---|
| Chin nods (retractions) | Reduce forward head, wake up deep neck flexors | 10 reps, 5-second hold, twice a day |
| Wall angels | Shoulder blade control, thoracic extension | 2 sets of 10 |
| Doorway pec stretch | Lengthen tight chest muscles | 2 times 30 seconds each side |
| Band pull-aparts | Strengthen rear shoulders and mid-back | 3 sets of 15 |
| Prone Y-T-W raises | Lower and mid-trap strength | 2 sets of 10 |
| Thoracic extension over a foam roller | Mobilise the upper back | 1 to 2 minutes |
| Hip flexor stretch | Reduce anterior pelvic tilt | 2 times 30 seconds each side |
| Glute bridge or hip thrust | Strengthen glutes | 2 to 3 sets of 10 to 15 |
Building it into your day
- Break up sitting. Stand, walk or stretch every 30 to 45 minutes.
- Set up your screen at eye level and your keyboard so your elbows are near 90 degrees.
- Carry your phone higher when you can rather than looking down for long stretches.
- Lift weights. Rowing and pulling movements strengthen the muscles that support your upper back.
- Sleep in a position you can tolerate, and change it.
When to see a professional
Get assessed by a physiotherapist or doctor if you have persistent pain, numbness or tingling, weakness, a noticeable and progressing curve in your spine, or a marked difference in shoulder or hip height that is new. Photo analysis is a screening aid and cannot diagnose a condition.
Measuring progress
Take photos every four weeks in the same clothes, lighting and stance. Look at the trend across three photos rather than any single one. The Body Report scores posture from a side photo and adds targeted steps to your ranked plan.