Reviewed September 27, 2026
Separated abdominal muscles may contribute to a belly bulge after childbirth, but the bulge alone cannot identify the cause. Look for a change along the middle when you move, then use the Tupler Technique® self-check guidance or ask a qualified professional to assess it.
How a separation can change belly shape
The rectus muscles run down the front of your abdomen. A band of tissue joins them. Pregnancy can stretch that band and move the muscles apart; The Tupler Technique® explains this in What Is Diastasis Recti?.
If the middle tissue is stretched, you may notice a rounded belly or a ridge when you rise. The shape is a clue, not a measurement. Bloating, a hernia, or another condition can also change how your belly looks.
Observe without guessing
Notice whether the bulge is there at rest, appears only as you get up, or changes over time. Tell a clinician if it is new, painful, firm, or different from before.
The Tupler Technique® self-check looks at both the distance between the muscles and the condition of the tissue between them. You can watch the check-your-belly video to see how it is done. Do not press into a painful area.
Understand the Tupler Technique®
The Tupler Technique® has four parts: the Diastasis Rehab Splint®, specific exercises, awareness of the transverse muscle during daily activities, and getting up and down correctly. Read the Tupler Technique® overview of the four steps before trying to follow a program.
A symptom article cannot tell you which part is right for you or promise that your belly will look a certain way. If you have recently given birth, follow your obstetric clinician’s advice about recovery and activity.
Learn more about the Tupler Technique®
Get Tupler TipsCommon questions
Can a postpartum bulge be caused by separated muscles?
Yes, separation may contribute, but a bulge can have other causes.
Can a photo tell me whether I have diastasis recti?
No. A photo cannot measure the muscles or examine the tissue between them.
What should I tell a clinician?
Describe when the bulge appears, whether it changes, and whether it hurts.
The Tupler Technique® was created by Julie Tupler, RN. Sources: What Is Diastasis Recti? and The Tupler Technique® overview. General information; your healthcare professional can advise you about your own symptoms.
