Diastasis Recti: Safer Moves and Ones to Skip
SaveWith diastasis recti, gentle exercises that flatten and engage the deep core are usually safe, while movements that dome the midline — full sit-ups, crunches, and heavy planks — are the ones to modify. Breathing and pelvic-floor work come first, and for most people the abdominal gap narrows over several months.
Last updated: July 2026
What is diastasis recti, exactly?
Diastasis recti is a widening of the gap between the two bands of the rectus abdominis, the muscles that run down the front of the belly. During pregnancy the linea alba — the connective-tissue seam between them — stretches and thins to make room for the growing uterus, and some separation is nearly universal late in the third trimester. A gap wider than about two finger-widths, or a visible ridge that tents up when you sit forward, is what clinicians usually mean by a lasting diastasis. Separation is common after both vaginal and cesarean births; if yours followed surgery, C-section recovery adds its own timeline. It is a mechanical change, not a sign that something tore.
Which movements help the gap heal?
Rebuilding usually works from the inside out, starting with the deep core rather than the six-pack. Diaphragmatic breathing, gentle pelvic-floor engagement, and deep transverse-abdominal holds teach the midline to generate tension again before any visible ab work begins. Pelvic-floor muscle training in the weeks after birth also supports recovery and lowers the odds of leaking 2Ref 2Woodley SJ, Lawrenson P, Boyle R, et al. (2020).Pelvic floor muscle training for preventing and treating urinary and faecal incontinence in antenatal and postnatal women.Systematic-review evidence that pelvic-floor muscle training in the antenatal and postnatal period supports recovery and reduces urinary incontinence, supporting a pelvic-floor-first approach to postpartum core rehab. Postpartum recovery is now framed as a process across the first 12 weeks — the fourth trimester — rather than a single visit at 6 weeks 4Ref 4American College of Obstetricians and Gynecologists (2018).ACOG Committee Opinion No. 736: Optimizing Postpartum Care.ACOG reframing of postpartum care as an ongoing process across the fourth trimester rather than a single 6-week visit. According to ACOG, once you are cleared, most people can gradually rebuild toward about 150 minutes of moderate activity a week, adding load as the core learns to stay flat 1Ref 1American College of Obstetricians and Gynecologists (2020).Physical Activity and Exercise During Pregnancy and the Postpartum Period: ACOG Committee Opinion, Number 804.ACOG guidance that activity can resume gradually after birth and that most postpartum people can work toward about 150 minutes of moderate-intensity activity per week; frames core and pelvic-floor exercise in the postpartum period. A pelvic floor physical therapy plan can sequence it.
Which exercises tend to make doming worse?
Movements that outpace your core's control are the ones to modify, not to fear. Full sit-ups, traditional crunches, weighted twists, and long planks can push the abdominal wall outward into a visible dome or ridge along the midline, which signals the load is beyond what the connective tissue can yet manage. Heavy overhead lifts and unsupported double-leg lowers do the same for many people early on. The fix is rarely to stop moving — it is to regress the movement until the midline stays flat, then progress again. Doming is feedback, not damage. The same crunch that domes at 6 weeks may be fine a few months later as strength returns, so watching the belly matters more than any fixed list.
How do you know if your core is ready to progress?
A simple self-check can tell you a lot between clinic visits. Lying on your back with knees bent, you can rest fingertips just above and below the navel and lift your head, feeling for the width of the gap and whether the midline tenses or sinks. A gap that narrows and firms as you engage suggests the deep core is doing its job; one that stays wide and soft, or domes upward, suggests staying with foundational work longer. Progress also shows up in daily life: rolling out of bed without bulging, carrying the baby without strain, or walking without heaviness below. Many people notice steady gains across the first 3 to 6 months. Rebuilding here also guards against postpartum back pain.
When diastasis recti deserves a clinician's eye
Some gaps and symptoms are worth a professional assessment rather than another month of solo workouts. Postnatal guidelines recommend a review when a separation is not improving, when the midline bulges or tents with everyday effort, or when back, pelvic, or bladder symptoms persist 3Ref 3National Institute for Health and Care Excellence (2026).Postnatal care (NG194).NICE postnatal-care guidance on recovery after birth and on when persisting symptoms warrant clinical review. Pelvic-floor physical therapists can measure the gap, check how breath, deep abs, and the floor work together, and help rule out a hernia, which occasionally coexists. Lifecycle matters too: the same midline can thin again during the perimenopausal years as estrogen and collagen shift, so a check-in is reasonable at any stage. Options range from tailored pelvic floor (Kegel) exercises to hands-on therapy, and rarely surgery. Gale can help you prepare for that conversation.
Common questions
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Say it back
How would you explain this to someone you love?
Two or three sentences, just as you’d say it. Gale reflects back what you focused on — a mirror, not a quiz.
When to check in about diastasis recti
- —A midline bulge or ridge that appears with lifting, coughing, or sitting up and does not soften is a reason to ask a clinician to rule out a hernia.
- —A separation that has not improved after several months of consistent core work is a reason to seek a pelvic-floor assessment.
- —New or worsening back, pelvic, or hip pain alongside the gap is a reason to arrange a clinical review.
- —Leaking urine, heaviness, or a dragging sensation in the pelvis is a reason to see a clinician about pelvic-floor recovery.
This article is general health education, not medical advice. Whether a given exercise suits your recovery depends on your birth, your symptoms, and your overall health, and is best decided with a clinician or pelvic-floor physical therapist.
References
- 1.American College of Obstetricians and Gynecologists (2020). Physical Activity and Exercise During Pregnancy and the Postpartum Period: ACOG Committee Opinion, Number 804. Obstetrics & Gynecology. doi:10.1097/AOG.0000000000003772 ✓ACOG guidance that activity can resume gradually after birth and that most postpartum people can work toward about 150 minutes of moderate-intensity activity per week; frames core and pelvic-floor exercise in the postpartum period
- 2.Woodley SJ, Lawrenson P, Boyle R, et al. (2020). Pelvic floor muscle training for preventing and treating urinary and faecal incontinence in antenatal and postnatal women. Cochrane Database of Systematic Reviews. doi:10.1002/14651858.CD007471.pub4 ✓Systematic-review evidence that pelvic-floor muscle training in the antenatal and postnatal period supports recovery and reduces urinary incontinence, supporting a pelvic-floor-first approach to postpartum core rehab
- 3.National Institute for Health and Care Excellence (2026). Postnatal care (NG194). National Institute for Health and Care Excellence (NICE). link ✓NICE postnatal-care guidance on recovery after birth and on when persisting symptoms warrant clinical review
- 4.American College of Obstetricians and Gynecologists (2018). ACOG Committee Opinion No. 736: Optimizing Postpartum Care. Obstetrics & Gynecology. doi:10.1097/AOG.0000000000002633 ✓ACOG reframing of postpartum care as an ongoing process across the fourth trimester rather than a single 6-week visit
4 sources, numbered by first appearance. General health information, not medical advice. AI-assisted editorial content — every citation independently verified. Editorial policy