Stretch · Some talk
McGill Big 3
Also called mcgill big 3 · curl up bird dog side plank · stuart mcgill big three · spine sparing core
Community talk. May contain inaccuracies. Not medical, training, or diet advice. Sharp pain, fainting, or disordered-eating concerns need a clinician.
The McGill Big 3 are a modified curl-up, side bridge and bird-dog developed by spine researcher Stuart McGill. They practice keeping the torso steady while its muscles work. The emphasis is endurance and control, rather than maximum strength.
McGill · 201001
What the three movements involve
The modified curl-up uses a small lift. Lying face up, hands support the natural lower-back curve while the shoulders rise slightly and the neck stays aligned. Bracing means stiffening the abdominal wall, without drawing it inward or pushing it outward.
McGill and Karpowicz · 2009The side bridge supports the body sideways. The easier form uses an elbow and bent knees; the harder form uses the feet. The hips lift with ribs and pelvis aligned, without twisting.
McGill and Karpowicz · 2009The bird-dog moves opposite limbs around a steady torso. From hands and knees, an arm reaches forward as the opposite leg extends back, with the neck and back aligned. MUSC describes moving an arm alone or a leg alone as easier versions.
MUSC · 2022Short holds are repeated rather than made longer. McGill's 2010 review describes holds under 10 seconds, with repetitions building endurance. That is his method's timing, not a universal prescription for a painful back.
McGill · 2010The equipment requirement is small. The exercises need no gym equipment. Firm floor space and optional knee padding are practical requirements; getting down to and up from the floor still matters.
MUSC · 202202
What people hope to gain
Practice maintaining trunk control. McGill uses the trio to develop coordinated muscle endurance: keeping the torso steady as forces pass between the limbs. These drills are one stage in his approach, rather than a complete strength or sports program.
McGill / Backfitpro · 2012Back-pain improvement is possible, but superiority is unproven. A 2018 trial assigned 34 people with chronic nonspecific low-back pain to McGill exercises or conventional exercises for six weeks. The McGill group improved on pain and disability, but differences between groups were not statistically significant. It does not establish that the trio is the best treatment.
Ghorbanpour et al. · 201803
Good to know
The three exercise names cannot select a rehabilitation plan. McGill's broader method includes assessment, activity changes and individual tolerance. Copying the trio alone leaves those decisions unresolved; it cannot identify the cause of someone's pain.
McGill / Backfitpro · 2012Worsening symptoms need attention, not extra repetitions. Stop exercises that worsen pain and seek clinical advice; sharp pain or fainting also needs a clinician. Back pain with new genital or anal numbness, bladder or bowel changes, or pain, tingling, weakness or numbness in both legs needs emergency assessment. Pain worse at night warrants medical review, rather than automatically meaning an emergency.
NHS · 202604
From community discussion
A five-to-ten-minute primer can be easy to repeat and dull to perform. People describe learning the positions, then keeping a short block before lifting or within a wider exercise plan. Some call it boring on purpose and keep it while back concerns remain relevant. That reported time is a habit, not a required session length.
CommunityKeeping all three together can help adherence. A r/backpain poster proposed rotating front, side and back work across days. One reply preferred all three daily because splitting them made skipping easier, describing 6, 4 and 2 repetitions with 10-second holds. That is one user's schedule, not an agreed standard.
Community · Reddit r/backpainSmall form cues create surprisingly large questions. In a form-check thread, replies discussed a roughly one-inch curl-up, a lower bird-dog leg and moving the head and shoulders together. One suggested pushing the belly outward, unlike McGill's bracing description. Side-plank shaking and bending during transitions also drew comments. These are observations, not diagnoses; the original video is now deleted.
Community · Reddit r/backpainTwo success reports describe months and other changes. One form-thread commenter reported returning to pain-free lifting after a collision while doing the exercises and following other McGill tips. Another said improvement took many months. Neither account isolates the trio or sets a recovery deadline.
Community · Reddit r/backpainThe side bridge can be the exercise someone cannot tolerate. In r/Sciatica, a poster tolerated curl-ups and bird-dogs but reported increased pain with side planks, even against a wall. Another described trouble getting into position; a third cut right-side planks after next-day symptoms despite shortening holds from 30 to 15 seconds. Easier-looking versions did not solve every report.
Community · Reddit r/SciaticaExperienced exercisers may find the basic trio too easy. In r/bodyweightfitness, one participant could not tell whether it helped because they changed several things, and felt light Romanian deadlifts had a more noticeable effect. They also disliked adding numerous warm-up drills. Others discussed resisting movement as a useful goal without treating these three exercises as unique.
Community · Reddit r/bodyweightfitness · 2020The three exercises can feel very different to the same lifter. A lifter doing the trio daily described strong abdominal cramping during curl-ups, while bird-dogs and side planks felt almost effortless. They clarified that their back complaint was stiffness rather than pain and asked whether the routine duplicated their other core work. Replies proposed alternatives, but the exchange does not establish what caused the stiffness or which exercise would treat it.
Community · T Nation · 2026Progress can coexist with work fatigue and setbacks. A 15-month update described lunch-break walking and Big 3 practice, better everyday tolerance, and a setback after adding lifting volume around long standing shifts. The writer used a coach and several exercises. This illustrates the difficulty of separating a short core block from the rest of life and training.
Community · Reddit r/SciaticaReferences for this topic
Sources and context
The McGill Method Has Done Nothing For Me. Has Only Made My Pain Worse! ↗
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- fit-wave-mcgill-mixed — The McGill Method Has Done Nothing For Me. Has Only Made My Pain Worse!
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- Community discussion
- accessed On
- 2026-09-23
- locator
- Post and selected visible replies returned by web search.
- scope
- A negative account contrasts with a reply crediting a broader individualized package; shows experience differs and three exercises do not establish the whole method.
- limitations
- Unverified health experiences, including unverified causal attribution. No diagnosis, instruction to exercise through pain or estimate of benefit/harm frequency.
Core Training: Evidence Translating to Better Performance and Injury Prevention ↗
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- fit-guide-mcgill-big-3-2010-review — Core Training: Evidence Translating to Better Performance and Injury Prevention
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- Strength and Conditioning Journal
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- Professional context
- accessed On
- 2026-09-24
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- Big 3 paragraph, caveats, and side-bridge figure note, June 2010
- scope
- The three exercises, endurance rather than strength, holds under 10 seconds, the Russian descending pyramid, and the beginner side bridge.
- limitations
- The retrieved lines do not print a numbered rep ladder, and the paper does not show that the trio fits every person with back pain.
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- mcgill-big-3
Exercises for spine stabilization: motion/motor patterns, stability progressions, and clinical technique ↗
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- fit-guide-mcgill-big-3-2009-exercises — Exercises for spine stabilization: motion/motor patterns, stability progressions, and clinical technique
- platform
- Archives of Physical Medicine and Rehabilitation
- role
- Professional context
- accessed On
- 2026-09-24
- locator
- Curl-up description and the note on patients who do not do well with stabilization
- scope
- Hand placement, short curl-up, bracing cue, and the limit that not all back-pain cases fit this approach.
- limitations
- The 5-second hold in the study is a lab trial, not the training cap in the 2010 paper.
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- mcgill-big-3
Core Training: Evidence Translating to Better Performance and Injury Prevention ↗
- id
- fit-rebuild-mcgill-big-3-2010-review — Core Training: Evidence Translating to Better Performance and Injury Prevention
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- Strength and Conditioning Journal
- role
- Professional context
- accessed On
- 2026-09-27
- published Or Updated
- 2010
- locator
- Big 3 paragraph, caveats, and side-bridge figure note
- scope
- The three exercises, endurance rather than strength, holds under 10 seconds, the Russian descending pyramid, the beginner side bridge, and the gymnast citation.
- limitations
- The opened lines name the pyramid and do not print a numbered ladder. The gymnast report is one sporting group, not every back.
- slugs
- mcgill-big-3
Exercises for spine stabilization: motion/motor patterns, stability progressions, and clinical technique ↗
- id
- fit-rebuild-mcgill-big-3-2009-lab — Exercises for spine stabilization: motion/motor patterns, stability progressions, and clinical technique
- platform
- Archives of Physical Medicine and Rehabilitation
- role
- Professional context
- accessed On
- 2026-09-27
- published Or Updated
- 2009
- locator
- Curl-up description and the note on patients who do poorly with stabilization
- scope
- Hand placement, short curl-up, bracing cue, the eight-man sample, and the limit that stabilization does not fit every painful back.
- limitations
- The five-second hold is a lab trial, not the 2010 training cap. The sample is small and healthy, not a treatment trial.
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- mcgill-big-3
The Big Three: Athletic Trainer Michael Sole with Exercises to Build Your Core ↗
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- fit46-mcgill-big-3-musc — The Big Three: Athletic Trainer Michael Sole with Exercises to Build Your Core
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- mcgill-big-3
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- Professional context
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- Medical University of South Carolina
- locator
- Home/equipment paragraph; Bird dog steps 1–4
- scope
- Equipment-free home practice, knee padding, opposite-limb bird-dog and single-limb versions.
- limitations
- Athletic-trainer explanation with promotion of MUSC services; not a treatment trial. Curl-up neck and hand-pressure cues differ from McGill's primary description and were not adopted.
- accessed On
- 2026-09-29
- published Or Updated
- 2022-12-20
Designing Back Exercise: from Rehabilitation to Enhancing Performance ↗
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- fit46-mcgill-big-3-method — Designing Back Exercise: from Rehabilitation to Enhancing Performance
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- mcgill-big-3
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- Official context
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- Stuart McGill / Backfitpro
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- Assessment and tolerance sections; rehabilitation stages; Big 3 and Figure 5
- scope
- McGill's stated endurance purpose and the trio's place within a wider individualized method.
- limitations
- Author's professional method explanation on a commercial books/courses/clinical-services site. Its strong causal and comparative assertions are not adopted as universal facts.
- accessed On
- 2026-09-29
- published Or Updated
- 2012-08-17
Effects of McGill stabilization exercises and conventional physiotherapy on pain, functional disability and active back range of motion in patients with chronic non-specific low back pain ↗
- id
- fit46-mcgill-big-3-trial — Effects of McGill stabilization exercises and conventional physiotherapy on pain, functional disability and active back range of motion in patients with chronic non-specific low back pain
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- mcgill-big-3
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- Professional context
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- Journal of Physical Therapy Science / J-STAGE
- locator
- Abstract: Subjects and Methods, Results and Conclusion
- scope
- 34 randomized participants, six-week comparison, within-group improvement and no significant between-group difference.
- limitations
- Small trial of chronic nonspecific low-back pain. Inspected publisher abstract; PDF opened but later page extraction failed. The authors' suggestion of extra benefit exceeds a statistically clear between-group result.
- accessed On
- 2026-09-29
- published Or Updated
- 2018-04-13
Back pain ↗
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- fit46-mcgill-big-3-nhs — Back pain
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- mcgill-big-3
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- Professional context
- platform
- NHS
- locator
- Non-urgent, urgent and immediate action sections; Exercises and stretches for back pain
- scope
- Worsening exercise pain and care escalation; nighttime pain versus emergency neurological/bladder/bowel symptoms.
- limitations
- General UK back-pain guidance, not a Big 3 suitability assessment. Sharp pain and fainting wording comes from the protected Fit contract, not this webpage.
- accessed On
- 2026-09-29
- published Or Updated
- 2026-03-05
McGill Big 3 vs 3 planks etc for lower back pain and programming questions ↗
- id
- fit46-mcgill-big-3-adherence — McGill Big 3 vs 3 planks etc for lower back pain and programming questions
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- mcgill-big-3
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- Community discussion
- platform
- Reddit r/backpain
- locator
- anhedonic_torus post; 5ervalkat reply describing daily 6:4:2 and skipping risk
- scope
- Splitting across days versus doing the trio together, practical adherence and one numerical routine.
- limitations
- Self-selected reports and advice, not verified program rules. Absolute publication date not exposed in opened body; relative display not converted into a date. Other anatomical advice in the reply was not endorsed.
- accessed On
- 2026-09-29
McGill Big 3 practice - am I doing it right? ↗
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- fit-rebuild-mcgill-big-3-reddit-form — McGill Big 3 practice - am I doing it right?
- platform
- Reddit r/backpain
- role
- Community discussion
- accessed On
- 2026-09-27
- locator
- July 2025 post by Financial-Ice5342 and the comment thread
- scope
- Disagreement on curl-up and bird-dog height, bracing cues, and two long personal timelines.
- limitations
- Form comments under one video. Stories of feeling better are not a recovery rate or a diagnosis.
- slugs
- mcgill-big-3
Anyone else have trouble doing side planks? ↗
- id
- fit46-mcgill-big-3-side-planks — Anyone else have trouble doing side planks?
- slugs
- mcgill-big-3
- role
- Community discussion
- platform
- Reddit r/Sciatica
- locator
- brisingr123 post; jsirabella and Thanardo replies
- scope
- Side-plank symptom aggravation despite other drills being tolerated, position-entry friction and 30-to-15-second hold reduction without resolving complaints.
- limitations
- Self-reported symptoms and unvetted diagnoses. The post calls its expanded routine Big 4; only its actual Big 3 exercise experiences are used. No original absolute date in opened body.
- accessed On
- 2026-09-29
BWF Daily Discussion and Beginner/RR Questions Thread for 2020-10-21 ↗
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- fit46-mcgill-big-3-bwf — BWF Daily Discussion and Beginner/RR Questions Thread for 2020-10-21
- slugs
- mcgill-big-3
- role
- Community discussion
- platform
- Reddit r/bodyweightfitness
- locator
- Badlac's Big 3 question and nested replies from a deleted account and stickysweetastytreat
- scope
- Uncertain benefit amid other changes, perceived ease, light Romanian deadlift comparison and warm-up time cost.
- limitations
- One short exchange inside a large thread; no outcome measurement or superiority comparison. One account deleted but its reply body remains visible.
- accessed On
- 2026-09-29
- published Or Updated
- 2020-10-21
McGill Big 3 for core training? ↗
- id
- fit-enrichment-20261009-mcgill-big-3 — McGill Big 3 for core training?
- slugs
- mcgill-big-3
- role
- Community discussion
- platform
- T Nation
- authors
- atlas13, with replies by j4gga2 and others
- accessed On
- 2026-10-09
- published Or Updated
- 2026-06-16–2026-06-18
- locator
- Opening post and atlas13's follow-ups 4 and 9; replies 3–10 distinguish opinions from the original experience.
- scope
- The three exercises can feel very different to the same lifter.
- limitations
- Self-report and forum suggestions; no clinical assessment. Do not repeat commenters' physiological diagnoses as facts.
McGill Method 15 Month Update ↗
- id
- fit46-mcgill-big-3-long-update — McGill Method 15 Month Update
- slugs
- mcgill-big-3
- role
- Community discussion
- platform
- Reddit r/Sciatica
- locator
- HipHingeRobot: overall trends, lunch breaks, long work shifts and training schedule
- scope
- Long-term reported improvement plus setbacks, work/training fatigue, coaching and several concurrent exercises.
- limitations
- Personal diary with unverified self-diagnosis and several interventions. The 15 months is the author's update title, not a required treatment duration. Opened body has no absolute publication date.
- accessed On
- 2026-09-29
Keep this topic in view
Preserved original record
Earlier public profile and reader notes are preserved separately from the current article. They may contain superseded wording and are not newly checked material.
Read the full original profile
- slug
- mcgill-big-3
- name
- McGill Big 3
- aliases
- mcgill big 3
- curl up bird dog side plank
- stuart mcgill big three
- spine sparing core
- family
- stretch
- heat
- mid
- talk
- Some talk
- most Discussed
- false
- first Line
- The McGill Big 3 are the modified curl-up, side bridge and bird-dog: three exercises discussed for trunk endurance and control.
- why Line
- People compare learning the movements, using them as part of a wider routine and mixed experiences with back symptoms; the exercise names do not identify someone’s diagnosis.
- feel Words
- mcgill
- bird dog
- side plank
- curl up
- common Picture
- lead
- Reported practice block: about 5–10 minutes
- why
- Some use it before lifting; others include it in a wider exercise or rehabilitation plan. [community]
- watch For
- Sharp pain, numbness, fainting. This is not a diagnosis and not a substitute for a clinician.
- what People Say
- The intended focus: trunk endurance and control with a modified curl-up, side bridge and bird-dog. That purpose does not guarantee suitability for every person with back pain. [community]
- r/bodyweightfitness and back-pain adjacent rooms still name Big 3. [community]
- how People Run It
- They learn the positions once, then keep them short. [community]
- amounts People Use
- The copied holds/reps from McGill talk — people still argue sets. [community]
- how People Keep It
- A 5–10 minute primer. [community]
- how It Feels
- Boring on purpose. [community]
- how Long People Run It
- As long as the back is in the story. [community]
- deep Dive
- Ten-minute mobility is the broader primer. Couch stretch is hips. [community]
- watch For Long
- Numbness, saddle symptoms, night pain: clinician now. [community]
- related
- ten-minute-mobility
- couch-stretch
- rest-days
- research Pointer
- house Pointers
- play Pointer
- —
- sources
- r/bodyweightfitness McGill threads
- spine-sparing core 2026 talk
- disclaimer
- Community talk. May contain inaccuracies. Not medical, training, or diet advice. Sharp pain, fainting, or disordered-eating concerns need a clinician.
- quick Answer History
- field
- definition
- rows
- The McGill Big 3 are curl-up, bird-dog and side plank as a short spine-sparing core trio.
- field
- communityPicture
- rows
- People copy the three positions as a primer before lifting. Numbness or night pain is sent to a clinician, not a longer plank.
- field
- whatPeopleSay
- rows
- The job: a short core that doesn’t wreck a cranky back further. [community]
- field
- commonPicture
- rows
- lead
- Three moves
- why
- Curl-up, bird-dog, side plank. [community]
- lead
- Before the bar in many logs
- why
- A primer, not the whole session. [community]
- lead
- Not crunches for a PR
- why
- Different religion. [community]
- field
- firstLine
- rows
- The McGill Big 3 is curl-up, bird-dog, and side plank — a named core trio people copy for a cranky back, not a sit-up test.
- field
- whyLine
- rows
- The McGill Big 3 is curl-up, bird-dog, and side plank — a named core trio people copy for a cranky back, not a sit-up test.
Read the preserved reader notes
- picture Clarifications
- definition
- The McGill Big 3 are the modified curl-up, side bridge and bird-dog: three exercises discussed for trunk endurance and control.
- community Picture
- People compare learning the movements, using them as part of a wider routine and mixed experiences with back symptoms; the exercise names do not identify someone’s diagnosis.
- additions
- text
- A 2020 back-pain thread contrasted a negative experience with a reply crediting a wider, individualized package of changes. Neither account proves that the three exercises caused the outcome. Separately, McGill’s professional writing discusses endurance and control rather than a maximum sit-up test. That distinction helps explain the trio’s purpose, while the person’s symptoms and assessment determine whether a particular exercise belongs in their care. More time holding a position is not automatically the answer to a worsening symptom.
- sources
- guide
- what
- The moving part is a torso that stiffens and holds. In a June 2010 review, Stuart McGill names the Big 3 as the modified curl-up, the side bridge, and the quadruped bird-dog. He writes that the core often acts to prevent motion so hip force can pass through a stiff trunk. These three train that job, not the job of creating limb motion.
- They are not a diagnosis, a sit-up contest, or a superman hold. The 2010 paper says the trio was chosen to spare the spine and to build endurance. Stability here is motor control at a low level of contraction, not a strength challenge.
- A 2009 paper in Archives of Physical Medicine and Rehabilitation measured forms of the same three exercises and said the results can guide which version to start with. It also notes that not every person with back pain does well with a stabilization approach. The exercise names do not identify a diagnosis.
- how
- Learn the positions, then keep them short. For the curl-up, the 2009 paper has the person supine, both hands under the low back to keep a neutral curve. Pivot about the sternum, lift the shoulder blades a short way, and keep the neck neutral. Do not peel the low back off the hands. Progressions are elbows off the floor, a braced abdominal wall, and breathing in the hold. The brace is a stiff belly, neither drawn in nor pushed out.
- For the side bridge, the 2010 paper starts with a beginner's version held for sets of 10-second contractions before harder versions. Challenge is added by bridging from the feet. The figure note asks for the rib cage and pelvis to line up, so the trunk does not twist. For the bird-dog, both papers use a hands-and-knees start. The 2010 progression is a fist with the arm and shoulder stiffened, chosen because the spine load stays lower than a superman hold.
- The 2010 notes say to keep isometric holds under 10 seconds and to build endurance with repetitions, not longer holds. They also say to use a Russian descending pyramid for sets and reps. The retrieved lines name the pyramid and do not print one ladder, so a copied 5-3-1 count is not stated there. Do the three, rest briefly, and stop when the spine position changes. The block is short enough to sit before lifting. It is not a long core class.
- understand
- The trio is split by direction. The curl-up is the front, with the lumbar spine kept still. The side bridge is the side. The bird-dog is the extensor pattern, without the hyperextended superman posture McGill compares it with. The 2010 caveats put impeccable form first and cap the hold so the muscles are not held into oxygen starvation and cramping, which is the reason he gives for staying under 10 seconds.
- The common miss is a longer hold, or an advanced bridge on the first day. The 2009 paper already says the starting level and the progression have to be chosen, and that stabilization work is not a fit for every painful back. A gymnast study is mentioned in the 2010 paper as one preseason use. That report is not evidence that the three exercises suit every back.
- Sharp pain, fainting, or chest pain is the point where a clinician is the next step, not another set. This is the wrong tool when the goal is maximum strength, or when a position clearly worsens symptoms. The names are exercises, not a diagnosis. How boring or useful the block feels in a lifting week stays in the community notes.
- sources
- summary Sources
- note References
- field
- whatPeopleSay
- index
- 0
- text
- The intended focus: trunk endurance and control with a modified curl-up, side bridge and bird-dog. That purpose does not guarantee suitability for every person with back pain. [community]
- sources
End of McGill Big 3