Diastasis Recti: What It Actually Is, and How to Rebuild Core Strength Postpartum
If you've noticed a gap or doming down the middle of your stomach after having a baby, you've probably already searched "diastasis recti" and landed somewhere between reassurance and panic. There's a lot of conflicting information out there — some of it outdated, some of it overly alarming. Let's clear it up.
What Diastasis Recti Actually Is
Diastasis recti is a separation of the connective tissue (the linea alba) that runs down the midline of your abdomen, between your left and right rectus abdominis muscles (the “six-pack” muscle layer of the abdominal wall). During pregnancy, this tissue stretches to accommodate your growing baby — which is a completely normal, expected adaptation, not an injury.
Some degree of diastasis recti is present in nearly every pregnancy by the third trimester. The question postpartum isn't really "do I have it," but "how is it recovering, and does it need attention?"
For many women, the gap narrows naturally over the weeks and months after birth. For others, it needs more deliberate rehabilitation. Neither outcome means something went wrong — it just means bodies recover at different rates, and some benefit from more structured guidance than others.
Here's the part most advice gets wrong: gap width alone isn't actually the most useful measure. What matters more is whether that connective tissue can generate tension — can it transfer load effectively? A wider gap with good tension function can perform better than a narrow gap that can't manage load well. The goal isn't to "close the gap." The goal is to restore the tissue's capacity to manage load, which is a meaningfully different target than the number of finger-widths between your muscles.
Why "Just Do More Crunches" Is the Wrong Advice
Traditional core exercises — crunches, sit-ups, certain plank variations — increase pressure straight down the midline exactly where that connective tissue is already under strain. Rather than helping the gap close, this can sometimes make the doming more pronounced, especially in the early postpartum weeks when tissue is still healing.
This is the same principle that runs through pelvic floor rehab generally: it's not about avoiding all core work, it's about managing pressure intelligently while you rebuild.
What Actually Helps
Start with breath and deep core coordination, not crunches. Your transverse abdominis — the deepest layer of your core — works together with your diaphragm and pelvic floor as a coordinated pressure system. Rebuilding that coordination is the real foundation, well before you're doing any kind of loaded or dynamic core work.
Exhale on effort, always. Just like with lifting and squatting, breath-holding during core work increases downward pressure at exactly the wrong time. Exhaling as you engage helps distribute that pressure appropriately instead of pushing it straight into a healing midline.
Progress gradually, and differently depending on your birth. Recovery timelines and starting points genuinely differ between vaginal and cesarean birth — a C-section involves healing through multiple layers of abdominal tissue, which changes both the timeline and the early-stage exercises that make sense. Generic postpartum programs that don't distinguish between the two are missing something important.
Rebuild from the ground up, not the ground floor. Early postpartum core work often starts in supported positions — lying down, side-lying, gentle bridging — well before standing dynamic movement. This isn't about being overly cautious; it's about sequencing recovery in an order that actually works with how tissue heals.
When to Get Individualized Guidance
Most diastasis recti responds well to a structured, well-sequenced approach. But a few things are worth a direct conversation with a pelvic floor PT rather than self-guided troubleshooting:
A gap wider than about three finger-widths that also has poor tension — width alone isn't the concern, but width combined with weak load transfer is worth assessing
A soft bulge or herniation sensation through the midline that doesn't reduce on its own
Doming or coning that persists no matter how much you scale back the exercise
Ongoing back pain or a sense of core "instability" during normal movement
Any of the standard pelvic floor concerns — leaking, heaviness, or pressure — alongside the core symptoms, since these systems are closely connected
None of these mean you did something wrong in your recovery. They're just a signal that your specific case benefits from hands-on, individualized assessment rather than a general article. And to be clear: diastasis recti is common, manageable, and doesn't prevent a full return to strength training — with the right sequencing, it's very much something you can train through, not just around.
The Bigger Picture
Postpartum recovery gets a fraction of the attention pregnancy does, even though the body has just as much rebuilding to do — arguably more. "Give it time" isn't wrong, but it's not a full plan either.
This is exactly what the postpartum module inside Strong From Within is built to walk you through — a dedicated roadmap for early recovery, with separate protocols for vaginal and cesarean births, so you're not guessing which advice actually applies to you.
If you're earlier in pregnancy and want to start building this foundation before birth, the program covers that groundwork from week one, so postpartum recovery isn't starting from scratch.
