Your Guide to Movement with Diastasis Recti

The way your tummy can seem to cone upward during certain movements, and the sense that your core is not quite doing what it used to. If you have been told you have diastasis recti and that there are things to avoid, it is reasonable to want more than a list. These experiences deserve a clear explanation, not just a set of restrictions. Movement guidance for diastasis recti can feel contradictory, and at times overwhelming. This article works through the practical detail: what to be mindful of and why, which movements place more load on the midline, safer alternatives, and how to think about progression.

What diastasis recti is and why it matters for movement

Diastasis recti happens when the connective tissues between rectus abdominus muscles, that run down the centre of your tummy, thins and widens, allowing the muscles to move apart to create more space for your growing baby. This is common, and a normal part of how your body makes room for pregnancy. For most people, the gap narrows on its own by around eight weeks after birth. If it still looks obvious at that point, it is worth raising with your GP.¹

Some movements create pressure inside your abdomen that the weakened midline cannot easily handle. When that pressure goes beyond what the tissue can control, the effort shows on the surface as a visible peak, bulge, or dome rising along the centre of your tummy. This is called doming, and it is the main signal to watch for. That is why movement guidance matters here.²

Doming: what it signals and what to do when you notice it

Doming is a signal you can watch for during movement, rather than a measurement or a diagnosis. If you notice a visible ridge or peak rising along your midline during an exercise or a daily task, that movement is creating more internal pressure than your abdominal muscles can manage right now. The practical principle is simple: stop or change the movement. Straining through doming again and again may slow healing or widen the separation, so the working rule is to adapt anything that keeps causing it.³

Doming can show up during exercise, and it can also show up during everyday tasks, like getting out of bed, picking something up off the floor, or straining on the toilet. If you notice it consistently, or find it is getting worse rather than easing, that is a reason to get assessed by a women's health physiotherapist rather than carrying on alone.

Movements that place more load on the midline

While your core strength and control are still rebuilding after birth, some movements create more forward pressure on the midline than others and are worth adapting rather than pushing through.

• Traditional sit-ups and crunches: the forward curl of your trunk creates high midline pressure and often brings on doming.
• Lifting both legs at once while lying on your back: this puts significant load on your lower abdomen and midline.
• Full planks and push-ups: these front-loaded positions need strong midline control before your core is ready for them.
• High-impact activities like running and jumping: best left until your core and pelvic floor strength are back, with guidance suggesting you wait at least three to six months after birth before returning to running.
• Heavy lifting, holding your breath during effort, and straining on the toilet: these all raise internal pressure and can work against healing.⁴

It is about finding a way to start exercising the rectus abdominus muscles, and whole abdominal wall, with good control and reduced doming.

One change makes an immediate difference to daily life. When getting out of bed, roll onto your side first and use your arms to push up to sitting, rather than curling straight up. This small adjustment takes load off your midline every single time. You can use this in the first 6-8 weeks after birth but then it is encouraged for you to start using your abdominal wall more for day to day tasks gradually.⁵

Safer alternatives and where to start

Recovery starts with the deepest layer of your abdominal muscles, the transversus abdominis. To engage it, gently draw your lower stomach in toward your spine, as if pulling on an inner corset. Keep breathing throughout, and do not hold your breath. This is the foundation for everything that follows.⁶

Foundational exercises that tend to work well without bringing on doming include pelvic tilts, bent knee fall-outs, and heel slides. These gently engage your core and start to build stability without putting too much load on your midline. Stop any of them if you notice doming, pain, or discomfort, and check in with your physiotherapist if that keeps happening.⁷

Replacing the movements that cause the most difficulty

Instead of crunches, try a small supported head lift. Lie on your back with your knees bent. Gently engage your lower abdominal muscles, then lift only your head off the surface. Check that no doming appears along your midline. If it does, stop and stay with the foundational exercises a little longer.⁸

Instead of a full plank, start with a modified version against a wall or from your knees. The key condition is the same: no doming along your abdomen. If a ridge appears, step back to an easier variation. You can bring planks back in gradually as your midline control improves.⁹

For all movements, try to breathe out on the effort part. This helps you manage internal pressure rather than spike it. Breathe out as you lift, push, or engage, and breathe in on the easier phase of the movement.

How to think about progression

Use the three signs below to judge when you are ready to progress, rather than working to a fixed date. You are ready to make an exercise harder when you can do it with good form, without holding your breath, and with little or no doming. Those three signs together are a more reliable guide than any calendar date. Keep in mind this is general guidance, and a physiotherapist can give you a clearer picture of your own progress.¹⁰

For high-impact activities like running, the guidance is to wait at least three to six months after birth, and to return only once your core and pelvic floor strength are established and you have no symptoms. Treat this as a minimum to build from, and give yourself longer if you need it. Some people do. The three-month mark on its own does not mean you are cleared to return.¹¹

When to seek professional assessment

You do not need to wait for a problem to escalate before raising it. You can speak to your GP or midwife at any point if you have concerns about your recovery. The six-to-eight-week postnatal check is a standard NHS appointment and a good chance to talk about your physical health, including abdominal separation. Your GP can refer you to physiotherapy if that is right for you.¹²

If the gap in your muscles still looks obvious at eight weeks after birth, contact your GP. A referral to a physiotherapist is often suggested when the gap looks wider than around two to three finger-widths, though finger-width measurement is an indicative guide only, not a diagnostic test. Functional symptoms are just as valid a reason to seek assessment, whatever the gap size: persistent back pain, a feeling of weakness or heaviness through your middle, or pelvic floor symptoms.¹³

A women's health physiotherapist can carry out a full assessment, build a programme around your own presentation, and advise you on returning safely to the activities you want to get back to. Access to NHS women's health physiotherapy varies across the UK. If wait times are long where you are, the Pelvic, Obstetric and Gynaecological Physiotherapy directory lists practitioners who work privately.¹⁴