Rebuilding Your Core After Pregnancy: Where to Start
TL;DR — What You'll Learn in This Post
If you're postpartum and wondering where to even begin with your core, you're in the right place. In this post, you'll learn:
What your core actually is — and why it's more than just your abs
The Big Three foundational movements every postpartum recovery should start with
How to progress safely once the basics feel solid
What symptoms to watch for and when to seek support
No sit-ups. No pressure to bounce back. Just a real starting point that actually works.
Before we dive in → grab my Pregnancy & Postpartum Core Guide — a simple, progressive program to help you move your body safely and rebuild core + pelvic floor strength, wherever you are in your journey.
Where This Comes From
After my twin pregnancy, I had to rebuild from the inside out — just like the people I work with every day as a pelvic health physical therapist. My body felt unfamiliar. I was navigating diastasis recti, weakness, and a level of fatigue I hadn't experienced before. What actually helped wasn't jumping back into workouts. It was slowing down, reconnecting with my breath, and rebuilding from the deepest layer first.
That's exactly what I want to help you do.
P.S. Wondering about diastasis recti? You're not alone — and you don't have to guess your way through it. Check out this post for everything you need to know about what DR is, how to assess it, and what actually helps.
34 Weeks Pregnant with My Boys!
Can you believe I still had two and half more weeks to go before the boys made their debut?
First, Let's Talk About What Your Core Actually Is
Most people think "core" means abs. But your core is a system — four muscles working together to manage pressure, support your spine and pelvis, and keep everything functioning the way it should.
That system includes:
Your diaphragm — your primary breathing muscle, sitting at the top of the canister
Your transversus abdominis (TA) — the deepest abdominal layer, wrapping around your trunk like a corset
Your pelvic floor — the base of the canister, supporting your bladder, bowel, and pelvic organs
Your multifidus — deep spinal stabilizers running along your lower back
These four muscles work together as a pressure management system. When you breathe, lift, laugh, sneeze, or walk — this system is coordinating behind the scenes. Pregnancy changes that coordination. The goal of postpartum core recovery isn't to "get your abs back." It's to get this system talking again.
The Big Three: Where Every Postpartum Core Recovery Starts
Before any exercise program, before any progression, these three movements are your foundation. They're not flashy — but they're the reason everything else works.
This is where postpartum recovery begins. Full stop.
Pregnancy changes the way you breathe. Your diaphragm gets compressed, your rib cage shifts, and your pelvic floor adapts to months of increased load. Relearning how to breathe fully — in all directions — is the first step in getting your core system back online.
How to do it:
Lie on your back with knees bent, or sit comfortably — whatever feels right for where you are in your recovery
Inhale through your nose, letting your ribcage expand in all directions — front, sides, and back
Exhale slowly through your mouth, feeling a gentle, coordinated response from your pelvic floor
Keep your shoulders relaxed, jaw soft, and chest relatively still
👉 Aim for 5–8 slow, intentional breaths. Do this multiple times throughout the day — no equipment, no mat required.
What to avoid:
Breathing only into your chest
Forcing or exaggerating the pelvic floor lift
Holding your breath at any point
Learn More About 360 (Diaphragmatic) Breathing Here
2. Transversus Abdominis (TA) Activation
Once breathing feels more natural, you can begin gently waking up your deep core.
The TA is the muscle most affected by pregnancy — it stretches significantly to accommodate a growing belly and often loses its ability to activate automatically postpartum. This isn't a failure. It's just physiology. And it's very addressable.
How to do it:
Lie on your back with knees bent, feet flat
Take two fingers and place them just inside your hip bones, about an inch down
Inhale to prepare
As you exhale, gently draw your lower belly inward — think "zipping up" rather than sucking in or bracing
Your back should stay neutral. You shouldn't feel your upper abs gripping or your breath stopping
👉 Hold for 3–5 seconds. Repeat 8–10 times. You should be able to breathe normally while holding.
The difference between TA activation and sucking in: Sucking in pulls everything up and in aggressively. TA activation is subtle — a gentle drawing in of the lower abdomen with no change in breathing or spinal position.
3. Pelvic Floor Coordination
This one surprises people: the pelvic floor isn't just about squeezing. In fact, for many postpartum people, the ability to fully relax the pelvic floor is just as important — if not more important — than the ability to contract it.
Coordination means both: a full release on the inhale, and a gentle lift on the exhale.
How to do it:
Lie on your back with knees bent, feet flat
Inhale through your nose — visualize your pelvic floor softening and releasing downward
Exhale through your mouth — feel a gentle lift, like an elevator rising one floor
The lift should feel coordinated with the exhale, not forced or held
👉 10 reps. Focus on the quality of the release as much as the lift.
Signs your pelvic floor may be too tight: difficulty fully releasing, urgency, pain with intercourse, or a feeling of pressure. If any of these sound familiar, working with a pelvic health PT can make a significant difference.
How to Progress From Here
Once the Big Three feel natural — meaning breath, TA activation, and pelvic floor coordination happen together without you having to think too hard — you're ready to layer in more movement.
Good next steps include:
Heel slides
Alternating marches
Bridge
Dead bug
Bird dog
Modified side plank
The rule for all of these: exhale on effort. Every time.
FAQs
1. When can I start rebuilding my core after pregnancy?
Gentle foundational work — like the Big Three — can often begin within the first days or weeks postpartum, even before your six-week appointment, if it feels right for your body. There's no universal clearance date. What matters more than a timeline is how you feel, what your symptoms are, and whether the movements feel manageable. When in doubt, check in with your provider.
2. Do I need to "close the gap" if I have diastasis recti?
No. The gap itself is much less important than how well the tissue functions. Two people can have the same gap measurement and have completely different outcomes based on how well their core system is coordinating. Focus on function — breath, activation, and coordination — not the number. [Read more about diastasis recti here.]
3. What if I had a C-section?
The Big Three are generally safe to start gently after a C-section, though the timeline for progressing to more active movements may be longer. Diaphragmatic breathing is especially helpful for C-section recovery — it supports circulation and can aid in scar tissue management over time. Always check with your provider before adding movement, and listen closely to your body around the incision site.
4. How long will it take to feel strong again?
Everyone's timeline is genuinely different. Factors like birth experience, sleep, feeding demands, and overall load all play a role. That said, most people notice meaningful improvement in connection and coordination within a few weeks of consistent foundational work — long before they feel "strong" in the traditional sense. Strength comes later. Connection comes first.
5. What symptoms should prompt me to see a pelvic health PT?
Leaking with movement, coughing, or sneezing. Pelvic pressure or heaviness. Pain with intercourse. Lower back or hip pain that isn't improving. Difficulty fully emptying your bladder or bowel. Any of these are worth discussing with a pelvic health PT — and all of them are addressable. You don't have to just live with it.
TL;DR — Your Starting Point
Your core is a system, not just your abs
Recovery starts with breath, activation, and coordination — in that order
The Big Three are your foundation before any other movement
Progress when your body is ready, not when a calendar says so
Symptoms like leaking, pressure, or pain are signals worth paying attention to — not things to push through
Your body did something remarkable. Rebuilding it takes time, intention, and the right starting point — and you've found it.
Ready to go further?
If you would like more support, here’s where to begin:
👉 Download the Pregnancy & Postpartum Core Guide
👉 Explore our Postpartum Recovery Guide
This post is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider regarding your bone health.