Diastasis recti is a widening of the strip of connective tissue that runs down the middle of your belly, between the two halves of the six-pack muscle. That strip is called the linea alba. It isn't muscle. It's a sheet of collagen, and during pregnancy it stretches sideways and thins out so the uterus has room. That's the whole thing. It's not a tear, it's not a rupture, and in most women it's not an injury. It's a tissue that did a job and now needs time and some load to firm back up.
We want to say that early because the word scares people. Someone sees a ridge pop up the middle of her stomach when she sits up in bed at day four and assumes something broke. Nothing broke. Nearly every woman at term has some separation, and almost every woman checking herself in the first two weeks will find a gap. That's not a diagnosis. That's a belly that was holding a baby six days ago.
The question that matters isn't whether you have a gap. It's how wide it stays, how soft the tissue in the gap is, and whether it's causing you problems.
At a glance
The breath that protects the midline
- 1
Lie down, knees bent, one hand on your ribs, one below the navel. Inhale through the nose for 4 counts.
- 2
Let the belly and lower ribs widen under your hands as you inhale. Do not push the belly out hard.
- 3
Exhale through pursed lips for 6 counts. Feel the lower belly draw gently in and the pelvic floor lift.
- 4
Repeat for 10 breaths, 2 or 3 times a day. Start in week 1 unless your provider says to wait.
- 5
Use the same long exhale before you lift the baby, the car seat, or sit up in bed for the next 6 weeks.
- 6
Skip crunches, sit-ups, and planks for at least the first 12 weeks. A gap needs load slowly, not all at once.
How to check it yourself
Wait until at least six weeks. Before that the measurement means very little and you'll just worry.
Lie on your back, knees bent, feet flat. Put two fingers on your belly button, pointing toward your feet, pressing straight down. Breathe out and lift your head and the tops of your shoulders off the floor, no higher than that. You're not doing a crunch, you're just turning the abdominal wall on. Feel for the two ridges of muscle coming toward your fingers from either side. Count how many fingers fit between them. Then do the same thing two finger-widths above the navel and two finger-widths below.
Three places, three numbers. The navel is usually the widest.
Now the part most people skip. With your head still lifted, notice how deep your fingers sink. Firm tissue that pushes back against your fingertips, even if it's two or three fingers wide, is in good shape. Tissue your fingers drop into, where you can feel the pulse of your gut underneath and nothing holding you out, is what needs work. Depth and tension tell us more than width does. A one-finger gap you can push to the knuckle through is worse off than a three-finger gap that's taut.
Also watch the midline while you lift. If a ridge rises up along the center, that's coning, sometimes called doming. It means the pressure inside your belly is pushing out through the weak line instead of being held in. Coning on a head lift, or when you get up off the couch, or when you pick up the car seat, is the sign we actually pay attention to.
If you get a different number than your sister or a different number from last week, that's normal. How hard you press, how high you lift, where you put your fingers, and whether you've eaten changes it. Measure yourself the same way each time and don't compare across people.
What it usually does on its own
A lot of closing happens without you doing anything. The uterus shrinks, fluid leaves, the tissue recoils. Most of that happens in the first eight weeks. Change then slows down and keeps going, more quietly, through the first year, especially once you're moving and loading the belly again.
The order is usually this. First the hard, high belly drops and softens. Then the width comes in, mostly above and below the navel, with the navel last. Then the tissue firms up. The last thing to go, if it goes, is the little soft pouch right at the navel, and for some women it never fully goes and that's fine as long as it's firm and it isn't bothering them.
A gap that is still wide and soft at four to six months, that cones when you do ordinary things, or that comes with a back that aches by afternoon, a lower belly that feels unsupported when you stand, leaking when you sneeze or run, or a feeling of heaviness between your legs, is a gap that wants help. That's the point to see a pelvic floor physical therapist. Ask your OB-GYN or midwife for the referral, and get their clearance before you start exercising anyway. A PT will measure the width and depth at rest and under load, check whether you can generate tension across the line at all, check your pelvic floor, and watch how you breathe and how you lift. None of that is something you can fully do on yourself.
One thing a PT or doctor also checks is whether a hernia is sitting in the gap. A hernia is different: it's a hole in the tissue, not a stretch, and part of the gut can push through it. If you have a bulge that is tender, that doesn't flatten when you lie down, or that hurts, that needs a provider, not a program. The same goes for soaking a pad an hour, a fever, pain in your chest or calf, or thoughts of harming yourself or your baby. Call your provider or 911 for any of those.
What actually helps
Not crunches. Not sit-ups, not planks, not anything that makes the ridge pop up. In the first months those push outward against the exact tissue you're trying to firm. Not an all-day waist trainer either. It holds you in while it's on and does nothing once it's off, and it squeezes pressure down onto a pelvic floor that's also healing.
What helps is boring. Breathing first: lie down or sit, let the ribs widen on the inhale, and on the exhale feel the lower belly draw in gently, as if you're pulling the hip bones a little toward each other. Ten slow breaths, a few times a day. Then add a short head lift on the exhale, only as high as you can go without coning. If it cones, you've gone too high or you haven't got the exhale timed with it. Eight to ten of those. Then stand up and use the same exhale every time you lift the baby, the stroller, the laundry.
Roll onto your side to get out of bed. Sit up through your elbow. Don't jackknife straight up, which is the one movement that cones nearly everyone.
Walk. Start at ten minutes and add from there. The tissue firms up in response to load, and walking is the safest load you have.
Sleep when you can, drink water, eat protein with every meal. Collagen is built out of what you eat, and a tired, underfed body remodels tissue slowly. If you're breastfeeding, you need the calories; cutting hard doesn't shrink the gap, it just slows everything.
Give it weeks, not days. Check once a month, same way, same position, and look for tissue that pushes back harder than it did last time. That's the change that matters.
We put the breathing, the head lift, and the daily lifting habits into one short routine called "The 10-Minute Mom Pooch Reset," so you don't have to piece it together from this post.
The 10-Minute Mom Pooch Reset
The 12-week, 10-minute-a-day core and belly plan for exhausted moms: the gap check, breath-to-core, three phases, kitchen-counter and naptime routines, food that helps, and 6 printable trackers.
See the plan →Not sure yet? Take the free 2-minute quiz
Educational content from the Mom Pooch Reset team. Not medical advice for your specific situation. Get clearance from your OB-GYN or midwife before exercising after birth, and see a pelvic floor physical therapist for leaking, pain or a bulge.
