Diastasis Recti: What It Is, How to Check for It, and Safe Exercises to Support Recovery

You’re six months postpartum. You feel mostly like yourself again — until you sit up in bed and notice a ridge running down the middle of your stomach. Or your midsection still looks pregnant no matter what you do. Or you’ve read the phrase “mummy tummy” on the internet and hated every second of it.

Let’s talk about diastasis recti honestly — what it actually is, how to check, and what genuinely helps. No fear-mongering, no miracle moves.

Jump to a sectionIn this article7 sections

1. What Diastasis Recti Actually Is
2. The Thing Everyone Measures — and Why It’s the Wrong Thing
3. How to Check for It
4. Myth vs. Reality
5. The Principles That Guide Safe Training
6. Small Steps to Take This Week
7. The Bottom Line

What Diastasis Recti Actually Is

Your “six-pack” muscle — the rectus abdominis — runs in two vertical halves down the front of your abdomen. Between them sits a strip of connective tissue called the linea alba (Latin for “white line,” which is exactly what it looks like).

During pregnancy, that tissue stretches and thins to make room. The two halves of the muscle drift apart. That’s diastasis recti: the separation and thinning of the linea alba.

Here’s the part nobody tells you: this is supposed to happen. Research suggests essentially all pregnant people have some degree of diastasis by the third trimester. It isn’t a tear. It isn’t damage. It’s connective tissue doing precisely what it was designed to do — accommodate a human being.

It also isn’t exclusively postpartum. It shows up in men, in people who’ve never been pregnant, and in anyone whose abdominal wall has managed sustained pressure over time.

The Thing Everyone Measures — and Why It’s the Wrong Thing

Ask the internet about diastasis and you’ll get one number: how many fingers fit in the gap. Two is fine, three is concerning, four is a crisis.

That framing is mostly wrong, and it causes a lot of unnecessary distress.

Width tells you very little about function. What matters more is tension — whether the linea alba can transmit force between the two sides of your abdominal wall. A person with a three-finger gap who generates good tension often has fewer symptoms than someone with a one-finger gap and a soft, unresponsive midline.

Think of it like a trampoline. You can ask about the distance between the frames. Or you can ask whether the surface holds when you put weight on it. Only one of those questions tells you if it works. 💡

So what actually signals a problem worth addressing? Symptoms, not measurements:

• Doming or coning — a visible ridge pushing outward when you exert yourself
• Low back or pelvic pain that hasn’t settled
• A feeling of weakness or instability through the middle
• Any pelvic floor symptoms — leaking, heaviness, pressure

Those are worth a conversation with a professional. A number on your fingers isn’t.

How to Check for It

You can screen yourself at home. Be clear on what this does and doesn’t do: it tells you whether to get assessed. It does not diagnose anything. Self-checks are genuinely unreliable — even trained clinicians disagree with each other measuring the same person.

Here’s the general approach:

1. Lie on your back, knees bent, feet flat on the floor
2. Place your fingertips just above your belly button, pointing down toward your feet
3. Lift your head and shoulders slightly off the floor — a small lift, not a full sit-up
4. Feel for the edges of the muscle on either side, and notice what’s between them
5. Repeat above and below your belly button — separation varies along the midline

Pay attention to two things. Width — roughly how many fingers sit between the muscle edges. And depth — do your fingers sink in, or does the tissue push back? That second one is the more useful signal, and it’s the one the internet forgets.

Then notice whether anything domes upward when you lift.

⚠️ Whatever you find, don’t diagnose yourself from it. If you have symptoms, or you’re just unsure, see a pelvic floor physical therapist. This is their entire specialty. They’ll assess width, depth, tension, pelvic floor function, and breathing mechanics — and give you a plan built for your body. One appointment is worth more than a year of guessing.

Myth vs. Reality

The Common Advice	What the Evidence Actually Suggests
Never do a crunch again, forever	Blanket lifetime avoidance of flexion isn’t well supported — the issue is loading before you can manage pressure, not the movement itself
Close the gap or you’ve failed	Function and tension matter more than width; many gaps never fully close and cause no problems
Planks are always off-limits	Depends entirely on whether you can hold pressure without doming — a plank on your knees may be perfectly appropriate
Only surgery fixes it	Most people improve substantially with conservative care; surgery is for specific cases, decided with a doctor
It means you’re weak	It means you were pregnant. It’s a normal adaptation, not a character report
Special “diastasis moves” heal it	No exercise is magic. Principles and gradual progression do the work

The Principles That Guide Safe Training

I’m not going to hand you a protocol. Diastasis recovery is individual, and the person who should be programming it is someone who can see you move. What I can give you are the principles that any good program is built on — so you know whether the one you’re following makes sense.

Breathe First

Your breath is the foundation, not a warm-up. Your diaphragm, deep abdominals, and pelvic floor work as one pressure system. If that system is uncoordinated, everything you load on top of it gets managed badly.

Practice breathing where your ribs expand sideways on the inhale and your midsection gently draws in on the exhale. Boring? Completely. Foundational? Also completely.

Manage Pressure, Don’t Avoid Effort

Doming is your feedback signal. If your midline pushes outward during a movement, that’s too much pressure for your current capacity — regress the movement, don’t quit forever.

Exhaling on the hard part of a lift helps. So does dropping the intensity until the doming stops. The goal isn’t zero effort. It’s effort your abdominal wall can currently handle.

Load Gradually

The same principle that builds any strength builds this: progressive overload, applied patiently. Start where you can maintain control, then ask for slightly more. Connective tissue adapts slowly — slower than muscle. This takes months, not weeks.

Start With the Basics

Most conservative approaches begin with low-pressure work: breathing drills, gentle deep-core activation, glute bridges, bird dogs, heel slides, side-lying work. Then progress toward loaded carries, split squats, and eventually full strength training.

Notice the destination. The endpoint of diastasis recovery is regular strength training — not a lifetime of tiptoeing around your own midsection.

Small Steps to Take This Week

• Do the self-check once. Note width and depth. Then put it down — checking daily helps nothing.
• Book the pelvic floor PT. If you take one thing from this article, take this one. ✅
• Practice breathing for three minutes a day. Ribs wide on the inhale, gentle draw-in on the exhale.
• Watch for doming during whatever you’re already doing. That’s your signal, and it’s free.
• Exhale on the effort. Rolling out of bed, lifting the car seat, standing from the floor.
• Stop measuring the gap weekly. It’s not the outcome that matters, and watching it will only make you anxious.

The Bottom Line

Diastasis recti isn’t something that went wrong with you. It’s evidence that your body did something extraordinary and is still finding its way back — on a timeline that belongs to connective tissue, not to Instagram.

You don’t need a secret exercise. You need breath, patience, gradual loading, and ideally someone qualified watching you move. And you need to stop measuring your recovery in finger-widths, because that number was never the point.

Your midsection isn’t broken. It’s rebuilding. Give it the same thing you’d give any other kind of strength: consistent, unglamorous work, repeated longer than feels reasonable. That’s what actually works — here and everywhere else.

This article is for general information only and isn’t medical advice, and it’s not a substitute for individual assessment. Diastasis recti should be evaluated by a qualified professional — talk with your doctor, midwife, or a pelvic floor physical therapist before starting or changing an exercise program, especially if you’re postpartum, experiencing pain, pelvic floor symptoms, or returning to training after pregnancy.

Keep going: this article is part of my complete fitness guide. For every guide, free tool, and honest review, organized by where you are stuck, visit the Weight Loss Hub.