Sit-Up With Diastasis Recti: Safer Core Strengthening
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The short answer
How do I do a sit-up with diastasis recti? Dead bug: lie on your back, knees bent over your hips at 90°, arms straight up. Exhale and slowly lower your right arm overhead and your left leg toward the floor while pulling your belly button to your spine. Pause when you feel your lower back start to lift, then return to start. Switch sides. The key cue: imagine zipping up tight jeans as you exhale. 3 sets of 8 per side.
Why this matters in midlife
Diastasis recti — separation of the rectus abdominis muscles along the linea alba — affects 33% of women postpartum and a smaller but real percentage of perimenopausal women whose connective tissue elasticity is declining. Sit-ups and crunches deepen the separation by bowing the abdominal wall outward. The fix is "draw in" patterns that re-engage the transverse abdominis — the deep core muscle that pulls the abdominal wall closed.
How to modify
Dead bug: lie on your back, knees bent over your hips at 90°, arms straight up. Exhale and slowly lower your right arm overhead and your left leg toward the floor while pulling your belly button to your spine. Pause when you feel your lower back start to lift, then return to start. Switch sides. The key cue: imagine zipping up tight jeans as you exhale. 3 sets of 8 per side.
What to avoid
- Crunches, sit-ups, V-ups — all bow the abdominal wall outward
- Russian twists — torsion under flexion deepens the gap
- Front planks if your belly visibly cones or bulges (check in a mirror)
- Holding your breath; doming worsens dramatically without exhale
- High-impact jumping until the gap is closed below 2 finger-widths
Safer alternatives
- Dead bug — Trains the transverse abdominis (the gap-closing muscle) with the spine supported
- Bird dog — Builds anti-rotation core strength without abdominal flexion
- Heel slides — Very early-stage exercise; gentle transverse engagement
- Side plank — Strengthens obliques without bowing the linea alba
How to progress when ready
Measure your gap weekly: lie on your back, lift your head, feel along the midline of your abdomen above and below the belly button. Count finger-widths. A 1-2 finger gap with good function (no doming, no leaking) is normal — many women never fully close further. Most women see meaningful change within 8-12 weeks of dedicated TA work. A pelvic floor PT or postpartum-trained physical therapist is high-value here.
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Continue →Frequently asked
Within the first 8 weeks postpartum, yes. After that, it requires intentional retraining. The good news: with the right exercises, it closes in 80%+ of cases at any age.
Abdominoplasty (tummy tuck) cosmetically closes the gap but does not restore deep core function. Most women resolve diastasis without surgery.
Modify chaturanga and avoid full backbends until the gap closes. Most other yoga is fine, but pay attention to abdominal doming as your signal.
Key takeaways
- Diastasis recti — separation of the rectus abdominis muscles along the linea alba — affects 33% of women postpartum and a smaller but real percentage of perimenopausal women whose connective tissue elasticity is declining.
- Crunches, sit-ups, V-ups — all bow the abdominal wall outward
- Russian twists — torsion under flexion deepens the gap
- Measure your gap weekly: lie on your back, lift your head, feel along the midline of your abdomen above and below the belly button.