If your middle feels soft or switched off since birth, this one quiet breath gently wakes your deep core back up.
If you have just had a baby and you are itching to feel strong in your middle again, there is one exercise worth learning before any sit-up, plank or crunch. It is deep core breathing, sometimes called diaphragmatic breathing or core connection breathing. It looks like nothing from the outside, which is exactly why so many mums skip it. But this quiet, gentle breath is the foundation your whole core rebuilds on, and it is the very first thing we teach inside Flat Belly After Baby.
Why is deep core breathing the first thing to learn?
During pregnancy your deep core stretches and switches off. The transverse abdominis (your natural built-in corset), the pelvic floor, the diaphragm and the multifidus muscles in your back are designed to work as one team. After birth that team often loses its timing. Jumping straight into crunches before that connection is back can push pressure outwards, which is the opposite of what you want when you are healing a soft middle or a separated tummy.
Deep core breathing wakes the team back up. It is slow, it is safe, and you can start it gently in the early days, long before you are cleared for proper exercise. Think of it as switching the lights back on before you ask the room to do any work.
How do you actually do deep core breathing?
You can do this lying down with knees bent, sitting tall, or on all fours. Lying down is the easiest place to feel it at first. Take it slowly and never hold your breath or bear down.
- Get comfortable. Lie on your back, knees bent, feet flat. Rest one hand on your lower ribs and one on your lower tummy so you can feel what moves.
- Breathe in to expand. Inhale softly through your nose and let your ribs widen sideways and your belly rise gently. Your pelvic floor naturally relaxes and lowers here. Nothing should clench.
- Breathe out and connect. Exhale slowly through pursed lips, as if fogging a mirror. As you do, gently draw your lower tummy in towards your spine and imagine lifting your pelvic floor, like stopping wind or lifting a blueberry with those muscles.
- Stay soft up top. Keep your shoulders, jaw and bottom relaxed. The effort is low and deep, not a big squeeze.
- Release and repeat. Let everything go on the next inhale. Aim for 5 to 10 slow breaths, once or twice a day, building up as it feels natural.
Want it shown, not just told?
Reading about a breath only goes so far. Flat Belly After Baby walks you through deep core breathing on video, then layers it into safe, progressive workouts you can do during nap time.
Start Flat Belly After Baby →Use code GLOW20 for 20% offHow do you know you are doing it right?
The signs are subtle, which is normal. You are on the right track if you feel these things rather than a hard ab burn.
What you should not feel: doming or bulging down the middle of your tummy, pressure pushing down into your pelvic floor, or your tummy popping outwards on the exhale. If you see a ridge or dome appear along your midline, ease off, breathe more gently, and have a women's health physio check your tummy.
What deep core breathing can and cannot do
It can
- Reconnect your deep core and pelvic floor so they fire on time again
- Help you feel more supported through your middle and lower back
- Lay the safe groundwork for harder core work later
- Be done gently in the early weeks while you heal
It cannot
- Remove loose skin or stretch marks
- Spot-reduce belly fat on its own
- Replace medical care for a wide gap, a hernia or ongoing pain
- Deliver overnight change, it is a steady habit
When should you start, and when should you see someone?
Gentle breathing and pelvic floor connection can usually begin in the early days, but get the all clear from your doctor or midwife before any real exercise programme, normally around your 6 week check and later if you had a c-section. See a women's health physio if you have a wide or deep tummy gap, a bulge or hernia, leaking, heaviness or dragging in your pelvic floor, or any pain. Once you are cleared, deep core breathing slots neatly into a bigger plan like our Complete Postpartum Body Reset bundle, which builds from this very breath up to full-body workouts.
The bottom line
Deep core breathing is the most important postpartum exercise almost nobody talks about. It is quiet, it is gentle, and it teaches your deep core to work as a team again. Master this first and everything you do afterwards becomes safer and more effective. Results vary, so be patient and kind with yourself.
Build your core back the safe way
Flat Belly After Baby starts exactly where this article ends, with deep core breathing, then guides you step by step into nap-time friendly workouts. No crunches, no rush, just a gentle plan that meets you where you are.
Start Flat Belly After Baby →Use code GLOW20 for 20% offFrequently asked questions
How soon after birth can I do deep core breathing?
Gentle deep core breathing and pelvic floor connection can usually be started in the early days as it is low effort and not a workout. Still, check with your doctor or midwife first, especially after a c-section, and stop if anything feels uncomfortable.
How often should I practise it?
Little and often works best. Aim for 5 to 10 slow breaths once or twice a day to begin with, then build up gradually. Consistency matters more than long sessions.
Will deep core breathing flatten my tummy?
It helps reconnect and tighten the deep muscles that support your middle, which can help you feel and look more drawn in over time. It cannot remove loose skin or spot-reduce fat, and results vary from mum to mum.
What if I see a bulge or dome down my tummy?
A ridge or dome along the midline can be a sign of abdominal separation. Ease off, breathe more gently, and have a women's health physio assess your tummy before progressing to harder core exercises.
This article is general education, not medical advice. Always check with your doctor before starting postpartum exercise.