A disc protrusion shrinks on its own in about 4 cases out of 10. Exercises, however, have nothing to do with that number: no movement pushes the disc back into place. They change something else, namely how much load your back tolerates and how irritated the nerve root stays. That is why the pain can disappear while the MRI stays identical to before.
If you are holding a report, the real question is not which exercise to do tonight: it is whether the disc will go back into place. We start there, then move to walking, then to the routine. One premise that holds for everything that follows: bed rest, once prescribed, is now considered counterproductive. Controlled movement does not damage the disc.
⚠ Important: read this before continuing
The exercises and advice in this article are general guidance and may not suit your situation. Every person has a unique clinical history: what works for others could be counterproductive for you.
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Can a Disc Protrusion Go Back In? The Honest Answer
Yes, it can shrink on its own. How much, though, depends on what type of herniation you really have, and the difference between the types is huge.
A systematic review of people treated without surgery (Chiu, 2015) calculated the probability of spontaneous regression for each type:
Sequestration (the fragment has detached from the disc): 96%
Extrusion (the material has crossed the annulus fibrosus): 70%
Protrusion (the disc bulges out but the annulus holds): 41%
Bulging (a disc barely protruding): 13%
Read the order again, because it is the opposite of what you would expect: the further the disc has come out, the more likely it is to be reabsorbed. The most widely accepted explanation is that material that has left the annulus is recognised as foreign and gradually removed, while material still contained stays where it is.
The practical consequence: being told "it's only a protrusion" sounds reassuring, but it does not mean it will go back easily. It means the opposite. 41% is still almost one person in two: it is an honest probability, not a promise.
A later meta-analysis of 11 studies (Zhong, 2017) estimated an overall reabsorption of 66.66% after conservative treatment. It is a nicer number, but it mixes all the types together, so it is pulled upwards by extrusions and sequestrations. If your report says protrusion, the number that concerns you is 41%.
Then there is the part almost nobody talks about: a protrusion can be there and do nothing. A review of 3,110 asymptomatic people, with no pain at all (Brinjikji, 2015), found a disc protrusion in 29% of 20-year-olds and 43% of 80-year-olds. Bulging goes from 30% to 84% across the same age range, disc degeneration from 37% to 96%. If the word disc degeneration appears on your report, this is what it is talking about. These are findings that come with normal ageing: the image alone does not prove that it is the cause of your pain.
So what do exercises do, if they do not push the disc back in? Three concrete things: they reduce the irritation of the nerve root, they restore tolerance to load in tissues that have become deconditioned, and they desensitise a nervous system that has become reactive.
Pain and imaging run on separate tracks. The pain can disappear with the MRI unchanged, and the MRI can improve while the pain stays. The aim of the programme is not to make the report disappear: it is to get back to moving without having to think about it.
Disc Protrusion and Walking: How Much, How, and What It Means If It Hurts
If you can do only one thing, walk.
A meta-analysis of 5 randomised trials, coordinated by the University of Bologna (Vanti, 2019), compared walking with structured exercise programmes in chronic low back pain: pain, disability, quality of life and fear of movement improve in a comparable way, in the short, medium and long term. Adding walking to exercise produced no further advantage in the short term. Walking is not the fallback for those who cannot manage the routine: it is an alternative with comparable results and no cost.
The dose matters more than good intentions.
How to start: 10-15 minutes twice a day on flat ground, not one long session. Two short doses are tolerated much better than one long one.
Progression: progress in small steps. Avoid thinking in percentages, though: the 10% a week rule did not stand up to scrutiny, while your reaction over the following 24 hours is a criterion that works.
Goal: 30-40 minutes a day, even split up.
Pace: one that lets you talk without running out of breath. It is not a cardio workout.
Terrain: flat and even at first. Sand, stones and uneven paths come later.
If the first minutes are the worst and then the pain loosens up, that is normal: keep going. If it gets progressively worse minute after minute, shorten the walk.
If it hurts when you walk, what does it mean?
The direction in which the pain changes while you walk tells you a lot about the problem in front of you. Two opposite patterns:
You walk and feel better, you sit and feel worse. This picture is compatible with a disc problem. Here walking is not just allowed, it is therapeutic: you are doing the right thing.
Pain or heaviness in the legs always appears after roughly the same distance, goes away if you bend forward or lean on the shopping trolley, and you feel better uphill than on the flat. This pattern is not a protrusion. It is the picture of neurogenic claudication from lumbar stenosis, more frequent after 60, and it needs to be assessed because it has its own path. The most up-to-date review (Ammendolia, 2022) indicates a multimodal approach with manual therapy and exercise as effective, while epidural steroid injections are not. If you recognise yourself here, the problem is not how many times you do the press-up.
If, while walking, the pain moves down towards the foot, stop. It is called peripheralisation: the symptom moves away from the centre, and it is the opposite of the signal we are looking for. It is not an endurance test to get through.
What a Disc Protrusion Is (and Why Movement Matters)
The intervertebral disc is the cushion between two vertebrae. In a protrusion it deforms and bulges beyond its limits, but the outer annulus fibrosus holds: the nucleus does not come out completely as in a true herniation. The bulge can irritate nearby nerve structures and cause local or radiating pain. The most affected levels are the last two of the lumbar spine, L4-L5 and L5-S1.
Why moving helps:
Disc nutrition. After childhood, discs have no direct blood supply. They are nourished by imbibition: the alternation of loading and unloading draws fluids and nutrients in from the surrounding tissues and expels waste products. Staying still interrupts this exchange.
Reduced irritation. Some movements, in particular lumbar extensions, reduce the load on the back part of the disc and the irritation of nearby nerve structures. They do not put the disc material back: they make the area less reactive and more tolerant.
Strengthening. Trained core, glutes and paravertebral muscles create a natural corset that distributes load better.
Effect on the nervous system. Controlled movement desensitises and breaks the pain-fear-immobility cycle.
Before you start: make sure the diagnosis is correct. It often happens that pain with a different origin is attributed to the protrusion, and in that case the wrong exercises make things worse.
Disc Protrusion Exercises: Lumbar Extensions (McKenzie)
McKenzie-style extensions are the most studied part of the programme. The underlying idea: some repeated movements make the pain "centralise", that is, bring it back from the leg towards the back. Centralisation is a good prognostic sign.
It does not work for everyone, and that needs saying. A systematic review (May, 2018) found centralisation in 40% of patients and a directional preference without centralisation in another 26%: 66% in total. In about a third of people neither one appears. If you are in that third you are not doing it wrong and you are not a serious case: your path goes through something else, and it is better to know right away than after three months of press-ups.
The rule that applies to all the exercises below: pain that moves back towards the spine is a good sign, pain that moves down towards the foot is the signal to stop.
1. Passive prone lying
How: face down, arms along your sides or under your forehead, body completely relaxed.
Dosage: 2-3 minutes, slow deep breathing.
When to stop: it is the gentlest version, suitable even in the acute phase. If this one already increases the leg pain, do not go on to the next ones.
2. Extension on the elbows (sphinx)
How: from the prone position lift your chest, resting on your forearms, elbows under your shoulders. Hips and pelvis stay on the floor: it is the detail that makes the difference.
Dosage: 30-60 second hold, 5-10 repetitions, several times a day.
When to stop: if the pain moves towards the knee or the foot.
3. Full extension (press-up)
How: from the prone position push on your hands, straightening your elbows, so your chest rises while your hips stay down. It is the progression of the sphinx: move on to it only if the sphinx does not worsen your symptoms.
Dosage: 10-15 repetitions with a 1-2 second hold at the top; in the acute phase even every 2-3 hours.
When to stop: if the pain extends further down the leg.
Exercises for Disc Protrusion: Spinal Mobility
They serve to keep the spine mobile without loading the disc.
4. Cat-cow
How: on all fours, hands under your shoulders and knees under your hips. Alternate rounding your back upwards (chin to chest) and arching it downwards.
Dosage: 15-20 very slow repetitions, synchronised with your breathing: breathe out as you round, breathe in as you arch.
When to stop: if the flexion phase bothers you, do only the extension half.
5. Thoracic rotation from all fours
How: on all fours, one hand behind your head; rotate your trunk following your elbow with your eyes, then bring the elbow towards the floor.
Dosage: 10 repetitions per side, slow and controlled.
When to stop: if you feel a pull in the lower back instead of between the shoulder blades; the movement must happen higher up.
6. Pelvic rotations lying on your back
How: lying on your back, knees bent and feet on the floor. Let your knees drop to one side as far as is comfortable, return to the centre, switch sides. Your shoulders stay on the floor.
Dosage: 10-15 repetitions per side.
When to stop: at the first tingling or radiating pain.
7. Standing side bend
How: standing, feet hip-width apart; slide one hand down your thigh as you bend sideways, then return to the centre and switch.
Dosage: 10 repetitions per side.
When to stop: if sharp pain appears on one side only.
Disc Protrusion Exercises: Core Strengthening
A trained core does not lock the back: it distributes load and reduces stress on the discs.
8. Transversus abdominis activation
How: lying on your back with knees bent, gently draw your navel towards your spine without flattening your back to the floor and without holding your breath. It should be a slight stiffening of the lower abdomen, not a strong contraction.
Dosage: 10 second hold, 15-20 repetitions, several times a day.
When to stop: if you hold your breath, you are pushing too hard. It is the basis of everything else: learn it before moving on.
9. Modified dead bug
How: lying on your back, hips and knees at 90 degrees. Activate the transversus, slowly lower one leg until the heel brushes the floor, bring it back up and switch. The lower back does not lift off the floor.
Dosage: 10 repetitions per leg.
When to stop: when your back starts to arch. That is the end of the set.
10. Bird-dog
How: on all fours with a neutral spine, extend your right arm and left leg together keeping the pelvis still, then alternate.
Dosage: 3-5 second hold, 10 repetitions per side.
When to stop: if the pelvis rotates, reduce the range or move only the leg.
11. Glute bridge
How: lying on your back, knees bent and feet on the floor. Activate the transversus, squeeze your glutes and lift your pelvis until knees, hips and shoulders are aligned.
Dosage: 3-5 seconds at the top, 15-20 repetitions.
When to stop: if you feel the lower back working instead of the glutes, you have gone up too far.
12. Plank on the knees
How: support on forearms and knees, body in a line from head to knees, core active and glutes slightly contracted.
Dosage: from 15-20 seconds up to 45-60, increasing gradually.
When to stop: when the pelvis sags towards the floor. Better 20 clean seconds than 60 crooked ones.
Exercises for Disc Protrusion: Stretching
It reduces the muscle tension that accompanies and amplifies the symptoms.
13. Knee to chest
How: lying on your back with one leg extended, bring the other knee towards your chest, holding your hands behind the thigh.
Dosage: 30 seconds, 2-3 repetitions per leg.
When to stop: if flexion increases the pain, skip this exercise: your preferred direction is a different one.
14. Piriformis stretch
How: lying on your back, cross your right ankle over your left knee to form a 4, then grasp your left thigh and pull it towards your chest. You feel the stretch in your right glute.
Dosage: 30-45 seconds per side, 2-3 repetitions.
When to stop: if tingling appears down the leg.
15. Hip flexors (psoas)
How: kneeling on one leg, the other foot forward with the knee at 90 degrees; push your pelvis forward keeping your trunk upright. You feel the stretch at the front of the hip of the back leg.
Dosage: 30 seconds per side, 2-3 repetitions.
When to stop: if you arch your back to feel more. Squeeze the glute and reduce the range.
16. Hamstrings lying on your back
How: lying on your back, lift one straight leg using a towel or a strap around your foot. It is safer than touching your toes while standing, which flexes the spine under load.
Dosage: 30 seconds per leg.
When to stop: if the pulling behind the thigh turns into tingling or an electric shock.
Disc Protrusion: Exercises to Avoid
Not everything that looks like "back exercise" is fine. To suspend or treat with caution:
Crunches and sit-ups. They repeatedly flex the spine under load and increase intradiscal pressure. Replace them with dead bug and bird-dog, which train the same area without bending the back.
Touching your toes and forward bends. Especially with straight legs and a weight in your hand.
Violent twisting. Fast or forced rotations of the trunk, in particular under load, as in golf or in certain gym exercises.
Lifting with a rounded back. Deadlifts with incorrect technique, but also picking a bag up from the floor by bending your back instead of your knees.
Running on asphalt in the acute phase. Repeated impact irritates the disc and nerve structures. Walk, swim or use an exercise bike until the symptoms have clearly improved.
Daily Programme
Morning (10-15 minutes): McKenzie extensions (prone, then sphinx), cat-cow and transversus activation. They help break down the night-time stiffness before the day begins.
During the day: micro-breaks every 30-45 minutes if you work seated (the reason is in the section below). Stand up, take a few steps, do 5-10 standing extensions with your hands on your hips.
Evening (15-20 minutes): core strengthening (dead bug, bird-dog, bridge), mobility (cat-cow, rotations) and stretching (piriformis, psoas, hamstrings).
Every day: walking, with the dosage already seen. If only one thing on this list survives the bad weeks, let it be that.
Why the Pain Gets Worse Sitting (and What to Do at the Office, in the Car and in Bed)
Sitting keeps the lower back in flexion for hours. If your relieving direction is extension, and it is the most common case among those who respond to McKenzie extensions, the seated position is exactly the opposite direction, held for eight hours. Hence the classic script: getting up from the chair is the worst moment of the day, and the first steps are the hardest.
You do not need to buy anything. You need to interrupt.
At the office. A micro-break every 30-45 minutes: standing, hands on hips, 5-10 slow extensions. It does more than the ergonomic chair. The best position is always the next one: alternate sitting, standing and moving instead of looking for the perfect posture.
In the car. Seats are almost all too scooped and push the pelvis into retroversion. A rolled-up towel in the curve of the lower back changes the position in ten seconds. On long journeys stop every hour and walk for two minutes.
In bed. There is no mattress that cures protrusions, there is the one that lets you sleep. On your side, a pillow between your knees; on your back, a pillow under your knees. What matters more is how you get up: first turn onto your side, push with your arms and let your legs drop off the edge of the bed. Bending forward as soon as you wake, when the spine is stiffest, is the classic way to ruin the morning.
Disc Protrusion Exercises: When to Expect Results
With consistency and correct technique, most people notice a change within 2-4 weeks. The typical pattern is in two stages: first the pain centralises, that is, it moves up from the leg towards the back, then it decreases in intensity. Centralisation is the first useful signal, and it arrives before real relief.
Expect the symptoms to improve before the imaging: if you feel better, repeating the MRI to measure progress is not necessary.
If after 4-6 weeks of regular, correct exercise nothing has changed, or if the symptoms get worse, do not keep going with the same programme. It needs to be reviewed: you may need a different direction of movement, or the cause of the pain may not be the one you think.
When You Need a Doctor and Not Exercises
In the great majority of cases, back pain with a protrusion is managed with movement. There are, however, signs in front of which the exercises should be set aside.
Urgent assessment, today:
Loss of bladder or bowel control, or sudden difficulty urinating.
Numbness in the saddle area: inner thighs, perineum, the area that touches a bicycle saddle.
Weakness that progresses: the foot that gives way on the stairs, the leg that lets go, difficulty standing on your toes or heels that gets worse day by day.
To be assessed without urgency, but without delay:
Fever or unexplained weight loss together with the back pain.
Pain that appeared after a major trauma, a fall or an accident.
No improvement after 4-6 weeks of correct, steady exercise.
Symptoms that progressively move down towards the foot instead of moving back up.
The first three on the first list do not wait for the physiotherapist: you go to the emergency room.
Exercises for Disc Protrusion: Professional Supervision
Even the best programme is ineffective if it does not suit you: the relieving direction, the presence of radicular symptoms and the phase you are in change the choices completely. A physiotherapist identifies your preferred direction, corrects your technique and adapts the loads as you respond. Telerehabilitation makes it possible to do this from home, by video consultation.
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If the back pain came with pregnancy, the picture is different and so are the exercises: Back pain in pregnancy.
Sources
- Low back pain and sciatica in over 16s: assessment and management (NG59), NICE, via NCBI Bookshelf
- Exercise therapy for chronic low back pain (Hayden et al., 2021), Cochrane Database of Systematic Reviews
- Prevention and treatment of low back pain: evidence, challenges, and promising directions (Foster et al., 2018), The Lancet
- The probability of spontaneous regression of lumbar herniated disc: a systematic review, Clinical Rehabilitation, 2015
- Incidence of Spontaneous Resorption of Lumbar Disc Herniation: A Meta-Analysis, Pain Physician, 2017
- Systematic literature review of imaging features of spinal degeneration in asymptomatic populations, AJNR American Journal of Neuroradiology, 2015
- Centralization and directional preference: An updated systematic review with synthesis of previous evidence, Musculoskeletal Science and Practice, 2018
- The effectiveness of walking versus exercise on pain and function in chronic low back pain: a systematic review and meta-analysis of randomized trials, Disability and Rehabilitation, 2019
- Non-operative treatment for lumbar spinal stenosis with neurogenic claudication: an updated systematic review, BMJ Open, 2022
Sources last checked: August 2026.
