Rebuilding Your Abs After Pregnancy
Your core has been through a lot. Here's a patient, step-by-step approach to rebuilding abdominal strength after pregnancy, with clear points to check in with a professional.
Rebuilding your abs after pregnancy works best as a gradual, staged process: get clearance from your doctor or midwife, start with breathing and gentle deep core and pelvic floor work, then build up to regular strength training over months, not weeks. Many people also benefit from seeing a pelvic health physical therapist, especially if they notice a gap down the midline, leaking, heaviness or pain. There's no deadline for "getting your body back," and your core is doing important work even before it looks the way you want.
This guide explains what changes during pregnancy, a general phased approach, and the signs that mean you should get a professional assessment. It's general information, not medical advice, so always follow the guidance of your own care team.
What happens to your abs during pregnancy
As the baby grows, the abdominal wall stretches a lot to make room. A few changes are especially common:
- The rectus abdominis stretches and the two sides move apart. The connective tissue between them, the linea alba, thins and widens. Some degree of separation is extremely common by late pregnancy. This is called diastasis recti.
- The deep core and pelvic floor are under more load. The transverse abdominis and pelvic floor support the growing weight, and vaginal birth or a long labor can place extra strain on the pelvic floor.
- Posture shifts. Your center of gravity moves forward, which often increases the arch in your lower back and changes how your ribs sit.
- After a C-section, you also have a surgical incision through several layers, which needs time to heal before loading.
For many people, separation reduces on its own in the first months after birth. For others, it persists and benefits from targeted rehab. You can read more in diastasis recti and abs.
Before you start: get assessed
Before you begin any core program after giving birth, check in with your doctor or midwife. They will usually discuss exercise at your postnatal check, often around six weeks after birth, though timing varies. A pelvic health physical therapist can assess:
- The width and depth of any abdominal separation.
- Pelvic floor strength and coordination.
- Scar healing after a C-section or tearing.
- Any pain, heaviness, or leaking.
They can then tailor a program to you. The phases below are a general outline, not a replacement for that assessment.
A phased approach to rebuilding your core
The timeline below is a rough illustration. Your pace may be faster or slower depending on your birth, recovery, sleep and fitness before and during pregnancy.
| Phase | Typical focus | Example exercises |
|---|---|---|
| 1. Early recovery | Breathing, gentle activation, walking | Diaphragmatic breathing, pelvic floor contractions, short walks |
| 2. Reconnecting | Deep core control with small movements | Heel slides, pelvic tilts, glute bridges |
| 3. Building stability | Longer holds, limb movement with a stable core | Dead bugs, modified side planks, bird dogs |
| 4. Strength | Progressive load and full-body training | Squats, deadlifts, carries, Pallof presses |
| 5. Return to higher demand | Running, jumping, heavy lifting, intense ab work | Gradual reintroduction as cleared |
Phase 1: Breathing and reconnection
Start with breathing. Lie on your back with knees bent, one hand on your ribs, one on your belly. Breathe in through your nose and let your ribs widen and your belly rise gently. As you breathe out, let your pelvic floor gently lift and your lower belly draw in slightly. This links your diaphragm, deep abs and pelvic floor, and is the foundation for everything else. Breathing and core bracing explores how breathing and bracing connect.
Gentle walking is often encouraged early, but follow your provider's advice.
Phase 2: Small, controlled movements
Once you have the breath pattern, add simple movements while keeping that gentle core connection:
- Heel slides: lying on your back, exhale and slide one heel away along the floor, then back. 2 x 8 per side.
- Pelvic tilts: gently flatten your lower back into the floor, then release. 2 x 10.
- Glute bridges: exhale and lift your hips, keeping your ribs down. 2 x 10.
Watch your stomach. If you see doming or coning along the midline, reduce the difficulty.
Phase 3: Stability
Here you start building endurance and control. The dead bug is a great choice because you can adjust it easily. Side planks from the knees and bird dogs build lateral and back strength. Keep reps slow and stop before you lose control.
Phase 4: Strength
Full-body strength training is a big part of rebuilding your core. Squats, hinges, rows and carries all train your trunk. Anti-rotation work, like the Pallof press, is a good bridge toward harder ab training.
Phase 5: Higher-demand training
Crunches, hanging leg raises, running and jumping are fine for many people eventually. Ask your physical therapist when to add them, particularly if you still have significant separation, leaking or heaviness.
Signs to stop and get help
Talk to your doctor or a pelvic health physical therapist if you notice:
- Doming or coning along the middle of your stomach during exercise.
- Leaking urine when you cough, sneeze, jump or lift.
- A feeling of heaviness, pressure or bulging in the pelvis.
- Pain in your back, pelvis, abdomen or scar.
- A bulge near your belly button that appears when you strain.
These are common and often very treatable, but they deserve proper assessment.
Fat loss after pregnancy
Many people want to lose weight gained during pregnancy, and that's understandable. Give yourself time. If you're breastfeeding, you need adequate calories and fluids, so avoid aggressive dieting and talk to your doctor or a dietitian about what's right for you. A gentle approach, focusing on protein, fiber-rich foods and regular movement, tends to be more sustainable than a strict diet during a period of disrupted sleep.
When you're ready to estimate your energy needs, the TDEE calculator gives a rough starting point, though it isn't designed for breastfeeding. Sleep and belly fat is also worth a read, since broken sleep affects hunger and energy.
Being kind to your body
Stretch marks, looser skin and a softer stomach are normal after pregnancy, and some changes may be permanent. That doesn't mean your core can't become strong and functional again. Track how you feel and what you can do, not just how you look. If you're struggling with body image or your mood, please reach out to your doctor; postnatal mental health support exists and is worth using.
Where AbShred fits
AbShred is an iPhone app, not yet released, for adults 18+ that gives AI estimates for six ab zones from one photo and builds a weekly ab plan. It doesn't assess diastasis recti, pelvic floor health or postpartum recovery, and it isn't medical advice. If you're postpartum, get clearance from your doctor or physical therapist first and treat any app as a motivation tool alongside their guidance. You can join the waitlist for launch news.
FAQ
When can I start ab exercises after giving birth?
Gentle breathing and pelvic floor work can often start early, but check with your doctor or midwife. More demanding ab exercises usually come later, after you've been assessed and cleared.
Will my abs go back to how they were before pregnancy?
Many people regain good core strength and function. The appearance may differ, because skin, stretch marks and the linea alba can change. A physical therapist can help you set realistic goals.
Are crunches bad after pregnancy?
Not always, but they're usually not the first step. They're often reintroduced once you can control pressure in your abdomen without doming. A physical therapist can guide timing.
How do I know if I have diastasis recti?
A gap or soft area along the middle of your stomach, or doming when you sit up, can suggest it. Ask a doctor or pelvic health physical therapist to assess it properly.
Is it safe to diet while breastfeeding?
Large deficits aren't recommended while breastfeeding. Talk to your doctor or a dietitian about a safe, gradual approach.