The Right Moves Can Close the Gap. The Wrong Ones Quietly Widen It.
Before you do another sit-up, here is what your tummy gap actually needs.
If your lower belly still domes, bulges, or sticks out months after having your baby, you are not imagining it, and you are certainly not lazy. Many mums are searching for the best exercises for diastasis recti because the usual advice, just do more crunches, has made their tummy look worse, not better. The good news is that the abdominal separation most new mums have can often improve with the right kind of gentle, consistent movement. The trick is knowing which workouts rebuild the core and which ones load the very gap you are trying to close.
Quick answer
Exercises that help close diastasis recti focus on the deep core, especially the transverse abdominis and pelvic floor, using breath-led moves like diaphragmatic breathing, gentle core engagement, heel slides, and supported bridges. Exercises that can make it worse are ones that cause the belly to bulge or dome, such as traditional crunches, sit-ups, full planks, and heavy twisting. Start gentle, watch for doming, and progress slowly.
What diastasis recti actually is (and why exercise matters)
Diastasis recti is a widening of the gap between your two columns of rectus abdominis muscle, the so-called six-pack muscles. During pregnancy, the connective tissue down your midline, called the linea alba, stretches to make room for your growing baby. After birth, that tissue often stays loose for a while, which is why your tummy can still look rounded or pop outward when you sit up. It is incredibly common and is a normal part of pregnancy, not a sign you did anything wrong.
Exercise matters because the goal is not really to force the two muscle bellies back together by sheer effort. It is to restore tension and control through the whole core canister, the deep abdominal muscles at the front and sides, the pelvic floor underneath, the diaphragm on top, and the back muscles behind. When that system works together again, the linea alba is better supported, the bulge often settles, and your trunk feels stronger and more stable. Pelvic health physiotherapists and bodies like ACOG support targeted core rehabilitation as a first-line approach, with a clinician referral if the separation is persistent or symptomatic.
The deep core: where real diastasis recti healing starts
The single most important muscle for ab separation is the transverse abdominis, your deepest abdominal layer. It wraps around your middle like a corset and, when it contracts, it draws the abdominal wall in and creates tension across the midline. This is the opposite of the bulging-out motion a crunch creates. Learning to find and use this muscle is the foundation of every good diastasis recti workout plan.
Here are gentle, beginner-friendly moves that are widely recommended as safe starting points once you have been cleared to exercise. These are the kind of diastasis recti safe workouts at home you can build a routine around:
- Diaphragmatic (belly) breathing: Lie on your back, knees bent. Breathe in to gently expand your ribs and belly, then exhale slowly and feel your lower tummy draw in. This reconnects the breath to your deep core.
- Transverse abdominis activation: On the exhale, gently draw your lower belly toward your spine, as if hugging your baby in. Hold the gentle tension for a few seconds without holding your breath.
- Heel slides: Keeping that deep core gently engaged, slowly slide one heel away along the floor and back. The challenge is keeping your belly flat and your back still.
- Supported glute bridges: Exhale, engage the deep core, then lift your hips. This trains the core and glutes together without loading the front of the belly.
- Side-lying or all-fours core holds: Gentle positions where gravity does not pull the belly outward, making them friendlier for an unhealed midline.
The aim is control, not burn. If you can keep your midline flat and avoid any bulging while you move, you are training the gap in the right direction. For a structured progression of these foundations alongside the moves you should skip for now, our guide on postpartum core exercises that are actually safe walks through it step by step.
Want it laid out for you, day by day?
If you would rather follow a gentle plan than piece moves together yourself, that is exactly what the Diastasis Recti Fix is built for.
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Which workouts make diastasis recti worse
This is the part that surprises most mums. Many popular ab exercises are the very ones that can slow your progress, because they load the midline outward before it has the tension to handle it. The clearest warning sign is doming, a ridge or bulge that pushes up along the centre of your belly when you exert yourself. Cleveland Clinic and pelvic health physiotherapists specifically advise avoiding movements that cause this doming or strain the linea alba.
Exercises that commonly cause problems early on include:
- Traditional crunches and sit-ups: They pull the rectus muscles forward and often make the belly bulge. This is why crunches can make diastasis recti and your belly pooch worse rather than flatter.
- Full front planks: A big ask for an unhealed core. If your belly sags or domes in the position, it is too much for now.
- Heavy twisting and oblique work: Bicycle crunches and loaded rotation can stress the midline.
- Leg raises and V-sits: Lowering both legs creates strong downward pull that an early postpartum core often cannot brace against.
- Heavy lifting while holding your breath: Bearing down spikes pressure inside the abdomen and pushes outward on the gap.
| Exercise type | Helps the gap | Can widen the gap |
|---|---|---|
| Deep core breathing and TA activation | Yes, foundational | No |
| Heel slides and supported bridges | Yes, once breath is mastered | No, if no doming |
| Traditional crunches and sit-ups | No | Yes, commonly |
| Full front planks (early on) | No | Often, if belly sags |
| Loaded twisting and leg raises | No | Yes, until core is stronger |
None of these moves are forbidden forever. Many mums return to planks, lifting, and even ab work over time. The point is sequence: build the deep core first, then progress to load once your midline can stay flat under effort.
How to tell if an exercise is helping or hurting
You do not need fancy equipment to monitor your own progress. The most useful skill is simply learning to watch and feel your midline during movement. Place a hand flat over your belly button as you do an exercise, and pay attention to what happens.
green lights: belly stays flat, no doming, no leaking or pressure
red flag is enough: a visible ridge or bulge means scale the move back
breath-holding allowed: keep breathing through every rep
If you see doming, feel a downward heaviness in your pelvic floor, leak urine, or notice your lower back arching off the floor, that exercise is too advanced for today. Make it easier, do fewer reps, or swap it for a deep core version. Progress in diastasis recti work is not about pushing through, it is about staying in the range where your core can stay switched on and supported.
Building a realistic routine that actually fits new-mum life
Consistency beats intensity every single time with ab separation. A few minutes of focused deep core work most days will do far more than an occasional long, hard session that leaves your belly bulging. Many mums see gradual change over weeks to months, and research reviews support targeted exercise reducing the inter-recti distance in some women, especially when started gently and built up over time.
A sensible weekly rhythm might look like this. Spend the first week or two purely on breathing and transverse abdominis activation until you can find that gentle draw-in easily. Then add heel slides and supported bridges, watching for doming. From there, slowly layer in all-fours and standing core work, light glute and back strength, and gentle walking. Only once your core stays flat under those should you think about returning to crunches, planks, or impact. This breath-first, then load, sequencing is exactly what postnatal physiotherapy protocols recommend.
Above all, be patient and kind with yourself. Your body grew and birthed a baby. A softer, slower belly for a while is normal, not a failure. If your separation is wide, painful, or simply not budging after several months of consistent work, that is a good moment to see a women's health physiotherapist who can assess you in person and tailor your plan.
A gentle plan that knows where to start and when to progress
The Diastasis Recti Fix sequences these moves for you so you build the deep core first and add load only when your midline is ready, no guesswork, no doming.
Explore the Diastasis Recti Fix, and new mums get 20% off with code GLOW20.
Frequently asked questions
Can exercise really close diastasis recti?
For many mums, yes, targeted deep core exercise can reduce the gap and improve how the belly looks and feels, especially in the first year after birth. It works by restoring tension and coordination across the whole core rather than forcing the muscles together. Results vary, and a wide or stubborn separation may need a physiotherapist's input or, rarely, surgical assessment.
Are planks bad for diastasis recti?
Full front planks are often too much in early recovery because the belly can sag or dome, which loads the midline. They are not banned forever. Once your deep core can keep your tummy flat under effort, many mums return to planks safely. Until then, use incline or all-fours variations and watch for any bulging.
How do I know if I am doming?
Lie on your back, knees bent, and gently lift your head as if starting a crunch while a hand rests on your belly. If you see or feel a ridge or pyramid pushing up along the midline, that is doming. It is a signal to scale the movement back to a gentler, deep core version.
How long until I see results from diastasis recti exercises?
Most mums notice gradual change over several weeks to a few months of consistent, gentle work rather than overnight. Some separation also narrows naturally in the early postpartum period. Little and often, with no doming, tends to beat occasional hard sessions.
Is it too late to fix diastasis recti if my baby is older?
It is rarely too late to improve core strength and function, even years on. The deep core can be retrained at any stage. The connective tissue may respond more slowly later, so progress can be gentler, and a women's health physiotherapist can help you set realistic goals.
When should I see a professional instead of exercising at home?
See a GP or women's health physiotherapist if your separation is wide, painful, accompanied by a bulge or hernia-like lump, causing back pain, or not improving after a few months of consistent gentle exercise. In-person assessment lets them tailor a safe plan to your body.
Sources: American Physical Therapy Association (pelvic health physiotherapy guidance on deep core and transverse abdominis training); American College of Obstetricians and Gynecologists (Exercise After Pregnancy); Cleveland Clinic (diastasis recti and doming); peer-reviewed systematic reviews indexed on PubMed and PMC on exercise for diastasis recti abdominis.
This article is general education and not medical advice. Postpartum recovery is individual and results vary. Always check with your GP, midwife, or a women's health physiotherapist before starting new exercise, especially after a c-section or if something does not feel right.