Diastasis Recti Repair: The Deep Core Moves That Actually Close the Gap

If your belly still looks pregnant months after giving birth, or your core feels completely useless no matter how many crunches you do, you might be dealing with diastasis recti. The frustrating part? Most people keep doing exercises that make it worse.

Time to fix that.

What is diastasis recti, exactly?

Diastasis recti is the separation of the two sides of your rectus abdominis muscle (your “six-pack” muscle) along the midline of your belly, called the linea alba. It is incredibly common during and after pregnancy, affecting up to 60% of postpartum women according to research published by the National Institutes of Health.

But it does not only happen to mums. Men, people who carry excess belly weight, and anyone who lifts heavy with poor form can develop it too. The gap ranges from mild to severe, and it often causes lower back pain, pelvic floor dysfunction, and that classic “doming” or “coning” at the belly’s midline during movement.

How to check yourself at home

Lie on your back with your knees bent. Place your fingertips horizontally across your belly button. Slowly lift your head and shoulders off the floor like a mini crunch. Feel for a gap or a soft, squishy valley between two firm ridges. A gap wider than two finger-widths may indicate diastasis recti, and that is your cue to read every word of this article.

The exercises you need to stop doing first

Some of the most popular core exercises actively pull that gap wider, and nobody mentions this at the gym. If you want to repair diastasis recti, remove these from your routine immediately.

• Traditional crunches and sit-ups increase intra-abdominal pressure and push your organs outward through the gap
• Leg raises (bilateral) place way too much load on an already compromised linea alba
• Full planks are a problem, especially when you see that cone or dome shape forming at your midline
• Heavy deadlifts and back squats should wait until your deep core learns to properly brace again
• Intense cardio like HIIT jumping creates ground impact pressure your core cannot yet manage

Yes, your favourite ab circuits might be the actual villain here. Sorry :/ The exercises that do work are just as effective though. They are just quieter about it.

The deep core moves that actually close the gap

Closing a diastasis recti gap is not about doing more exercise. It is about doing the right exercises, ones that target the transverse abdominis (TVA), your deepest core muscle. Think of the TVA as a corset that wraps around your entire midsection. When it activates properly, it draws the two sides of your rectus abdominis back together.

1. Diaphragmatic breathing (your starting point)

This sounds too simple to work. It is not. Learning to breathe with your diaphragm is the non-negotiable foundation of diastasis recti repair. Most people breathe shallow and use their chest, which never engages the deep core at all.

1. Lie on your back, knees bent, one hand on your chest, one on your belly
2. Inhale slowly through your nose. Your belly should rise and your chest should stay still
3. Exhale slowly through pursed lips. Feel your belly gently fall and your pelvic floor lift
4. Do this for 5 to 10 breaths, two or three times daily

On every exhale, gently draw your navel toward your spine. That is your TVA activating. Master this before moving to any other exercise.

2. Heel slides

Once you have the breathing down, add heel slides. They are gentle, controlled, and genuinely good for rebuilding TVA strength without stressing the gap.

1. Lie on your back, knees bent, feet flat on the floor
2. Take a deep breath in to prepare
3. As you exhale, engage your deep core (navel to spine) and slowly slide one heel along the floor until your leg is straight
4. Inhale to return. Alternate sides. Aim for 10 reps per side

If you see or feel any doming at your midline, you are going too fast or using too much effort. Stop, reset, and go slower.

3. Dead bug exercise

The dead bug is one of the most underrated deep core exercises around. It challenges your TVA without putting any harmful pressure through the linea alba, as long as you do it correctly.

1. Lie on your back, arms pointing straight up toward the ceiling, knees bent at 90 degrees in tabletop position
2. Inhale to prepare, then exhale and engage your core
3. Slowly lower your right arm and left leg toward the floor at the same time. Keep your lower back pressed flat
4. Inhale to return to start. Switch sides. Do 8 to 10 reps per side

4. Modified side plank (knee down)

Once traditional planks are out, the modified side plank fills the gap. It builds lateral core stability and strengthens the obliques, muscles that genuinely help close the separation, without creating the dangerous doming.

1. Lie on your side, prop yourself up on your forearm, bottom knee bent on the floor
2. Exhale, engage your core, and lift your hips off the ground
3. Hold for 10 to 20 seconds. Keep your body in a straight line from knee to shoulder
4. Do 3 holds per side and build duration over weeks

5. Glute bridges

Weak glutes directly affect your pelvic floor and deep core. Glute bridges activate your posterior chain while gently loading the core in a safe, supported position, making them well-suited for diastasis recti recovery.

1. Lie on your back, feet flat, knees bent, arms by your sides
2. Exhale and drive your hips up by squeezing your glutes
3. Hold at the top for 2 seconds, then lower slowly
4. Do 12 to 15 reps, 3 sets

If you want to progress eventually, Bulgarian split squats become a powerful posterior chain builder once your core can handle more load.

Supporting your recovery beyond exercise

Exercise does most of the heavy lifting here (pun intended), but recovery also depends on what you eat and how you manage inflammation. A diet rich in protein supports tissue repair, and staying hydrated keeps your connective tissue pliable and responsive.

If you are gaining unexpected weight on top of your diastasis recti recovery, it is worth checking out these 16 surprising reasons why weight gain happens, because some of them directly impact core healing too.

According to Women’s Health Magazine, nutrition and reducing overall inflammation are central components of a full diastasis recti recovery plan, not afterthoughts.

How long does diastasis recti take to heal?

Honest answer: it depends. Mild cases with a gap of two to three finger-widths can improve significantly within 6 to 12 weeks of consistent, targeted exercise. More severe separations take longer and sometimes need input from a pelvic floor physiotherapist.

If you are experiencing significant pelvic floor issues alongside your diastasis recti, Pelvic Guru is a solid resource for finding qualified pelvic health specialists near you. Do not skip that step.

Hip mobility plays a bigger role in core function than most people realize. Tight hips limit how well your deep core activates during movement, so working on your hip circles and mobility alongside these exercises speeds up your progress.

Common mistakes that slow down your progress

• Rushing to harder exercises too soon — patience here pays off directly in results
• Ignoring the pelvic floor — the TVA and pelvic floor work as a team, and neglect one and the other suffers
• Holding your breath during movements — always exhale on effort
• Skipping the breathing foundation because it seems too basic. It is not
• Wearing a belly binder all day — excessive use can actually weaken the muscles you are trying to rebuild

When to see a professional

If your gap is wider than four finger-widths, or if you are experiencing serious pelvic pain, incontinence, or organ prolapse symptoms, please stop self-treating and see a pelvic floor physiotherapist. These professionals assess your specific separation and build a plan around it. No YouTube video replaces that, including this one. 🙂

Surgery (abdominoplasty) exists as a last resort for extreme cases, but the vast majority of women repair diastasis recti through consistent rehabilitative exercise. The American College of Obstetricians and Gynecologists recommends prioritising conservative, exercise-based treatment before considering any surgical options.

Your action plan: where to start this week

1. Do the self-check — know your gap width and whether doming occurs
2. Cut the crunch-based exercises immediately from your routine
3. Practice diaphragmatic breathing twice daily, morning and evening
4. Add heel slides and dead bugs every other day to start
5. Introduce glute bridges and modified side planks in week two
6. Track progress every four weeks with the self-check method
7. Book a pelvic floor physio if you have any doubts about your severity

The bottom line

Diastasis recti repair is not about working harder. It is about working smarter. The deep core moves in this article exist for one reason: to rebuild the foundational strength your body genuinely needs, not to impress anyone at the gym.

Stop the crunches. Start the breathing. Trust the slow work. Your core built an entire human, so give it the recovery it deserves, and it will absolutely come back stronger.

Start with just five minutes of diaphragmatic breathing today. That is where every successful diastasis recti repair story begins.