Understanding Rectus Diastasis and how to rebuild abdominal strength with FysioPilates

For many people, the tummy can feel like it’s not part of the team.

No matter how much effort you put in, your abdominals just won’t join in, they hang out, refuse to engage, and leave you wondering if you’ll ever feel strong again.

This is often the reality after pregnancy, when changes to the abdominal wall can result in rectus diastasis (also called diastasis recti or abdominal separation).

 

But the truth is:

with the right approach, you can reconnect to your core, regain control, and rebuild strength from the inside out.

 

What is Rectus Diastasis?

Rectus diastasis is when the two halves of the rectus abdo

minis (the “six-pack muscles”) separate along the midline, creating a gap bigger that “normal” in the connective tissue called the linea alba.

It’s common in women after pregnancy, but can also occur in men, athletes, or anyone who has experienced changes in abdominal pressure or load.

 

Typical signs of diastasis recti include:

  • A visible bulge or “doming” down the midline when moving or sitting up
  • A soft or unsupported feeling in the belly
  • Lower back pain or hip discomfort
  • Weakness in core stability during daily activities or exercise
  • In some cases, no obvious symptoms at all

 

The important thing to remember:

it’s not just about the size of the gap, but about how your body manages core strength, posture, breathing, and pressure.

 

Why some people have symptoms and others don’t

Two people can have the same measurement of abdominal separation, but very different experiences. One may feel no issues at all, while the other struggles with weakness, pain, or instability.

That’s because diastasis recti is not only structural, it’s

functional.

How your body coordinates breath, posture, and abdominal engagement determines whether the gap causes symptoms.

This is why a “2.7 cm rule” or any strict measurement doesn’t tell the whole story.

What matters most is how you use your body and how your muscles work together.

 

My own journey with abdominal separation

After pregnancy, I felt like my upper abdominals had given up completely. For years, I thought I’d never get them strong again.

But when I attended my first workshop on rectus diastasis recovery, years ago, everything changed.

I learned that strength could return even where I thought it was lost. My tummy wasn’t gone, it was waiting to be reawakened.

With the right exercises and progression, I found new control and stability in my core.

That experience gave me not just strength, but also confidence. It’s why I now guide others through the same process with Pilates-based physiotherapy for diastasis recti.

 

How Pilates helps diastasis recti recovery

The beauty of Pilates is that it builds strength

from the inside out. Instead of pushing into crunches or sit-ups that can make separation worse, Pilates focuses on safe and effective core activation.

Here’s how Pilates supports abdominal healing:

  • Reconnects your deep core muscles (like the transverse abdominis and pelvic floor) through breath and awareness
  • Protects your linea alba by reducing outward pressure on the abdominal wall
  • Improves posture and alignment, giving your abdominals better leverage
  • Strengthens progressively, layering challenge only when your body is ready
  • Restores to

    • ne and function so your tummy can join in again

    It’s about re-training the body to work as a team, breath, core, spine, and movement. Instead of letting your tummy sit out on the sidelines.

     

    First steps you can try today

    If your tummy feels like it’s “not joining in,” start small and gentle:

  • Breathing exercise: Lie on your back, hand just below your belly button. Inhale, letting your belly expand gently. Exhale, draw your tummy inward without forcing, inviting your deep muscles to join in.
  • Posture awareness: Notice if you often lean into your tummy or let it hang forward. Small changes in posture can reduce pressure and improve support.
  • Gentle activation: While standing or sitting, softly draw the lower part of your abdominals inwards

    1. while activating the pelvic floor. Keep your neck and shoulders relaxed.

    These are the foundations of rebuilding strength after pregnancy or abdominal separation.

     

    Rectus diastasis is not the end of your core strength. Even if your tummy feels disconnected, your muscles are still there. They just need the right kind of stimulation and progression.

    Pilates offers a path to help diastasis recti naturally, improve abdominal control, and restore confidence in your body. With patience and guidance, you’ll be amazed at what your abdominals can do, even after pregnancy, even after years of struggle.

    Your tummy is not gone. It’s waiting to shine again.

    Astrid