Returning to Workouts Postpartum: Core and Pelvic Floor Considerations

The journey through pregnancy and delivery involves profound changes to a woman’s body—from hormonal shifts that loosen ligaments to a dramatically altered centre of gravity. It is completely normal for your spine, pelvis, and core muscles to feel strained or out of alignment.

Many new mothers ask how to safely regain strength without causing further injury. The key is understanding these changes and taking a gentle, gradual approach to recovery. Major guidelines encourage new mums to stay active in safe ways once approved by their doctor. Seeking professional support can help restore alignment, ease nerve pressure, and ensure you rebuild your foundational strength correctly.

What This Guide Covers

• Understanding Changes: Hormonal, postural, and core changes post-birth.
• Warning Signs: Identifying persistent pain, sciatica, and core instability.
• Safe Exercise: Adopting the “Don’t Rush” philosophy and low-impact guidelines.
• Foundational Movements: Key exercises (walking, Kegels, core activations) for strength.
• Professional Support: How chiropractic care may aid spinal alignment and nerve recovery.

Understanding the Postpartum Body

The stress of carrying and birthing a baby creates a cascade of physical changes that directly impact spinal health and stability. Understanding the mechanism behind these changes is the first step toward safe recovery.

• Hormonal Laxity: Pregnancy hormones (like progesterone, oestrogen, and relaxin) cause the ligaments in the spine and pelvis to loosen. This hypermobility means joints, particularly the sacroiliac and spinal joints, can shift more easily, reducing core stability and requiring more muscle support.

• Postural Changes: As the baby grows, your centre of gravity shifts forward. This naturally increases the curve of your lower back (lumbar lordosis), tilting the pelvis. This exaggerated arch puts added, uneven stress on the discs, joints, and surrounding muscles in the back and hips.

• Stretched Core and Pelvic Floor: Your belly and pelvic muscles have been stretched wide. The abdominals (six-pack) separate (diastasis recti) in many women, and the pelvic floor muscles spread out. These changes weaken support for the spine and can alter breathing and posture. Recovery of pelvic strength often takes 4–6 months.

• Nervous System Effects: Misalignments caused by shifting posture or expansion of the uterus can irritate lumbosacral nerve roots. This may result in symptoms like sciatica (radiating pain, tingling, or numbness down the legs) or tension headaches and neck pain. Chiropractic care aims to gently realign the spine so nerves can function freely and pain is reduced.

Together, these changes mean the spine and pelvis may feel extra “off balance” after delivery. The body needs support to re-train muscles and realign joints as it works to return to its pre-pregnancy state.

Signs of Spinal Stress to Look For

New mums should pay close attention to symptoms that could signal spinal stress or instability. Common signs include:

• Persistent Low Back or Pelvic Pain: While backache is common immediately after birth, if the pain is moderate-to-severe, limits your ability to care for your baby (as noted in one report), or lasts beyond a few weeks, it may warrant discussion with a healthcare provider.
• Radiating or Sharp Pain: Pain that shoots into the buttocks or legs (sciatica) or flickers down the leg can indicate a pinched or irritated nerve. Similarly, hip or pelvic pain (often near the pubic joint or sacrum) that worsens with walking may signal sacroiliac joint stress.
• Core Weakness and Poor Posture: Feeling unusually unstable, “wobbly” in the trunk, or finding it difficult to stand upright comfortably can signal weakened core muscles or underlying alignment issues. If you consistently rely on extra back support or slouch to relieve strain, a professional check-up is recommended.
• Slow Recovery of Muscle Function: By about 3–6 months postpartum, most pregnancy-related aches should be easing. (Over 90% of women see natural resolution of pelvic/sacroiliac pain by then.) If pain or weakness persists past that time, or you had a very difficult labour or C-section, professional guidance is advised.
• Other Warning Signs: Watch for new or worsening incontinence, persistent numbness, or dizziness during exercise. While mild urinary leakage can be normal early on, worsening bladder control or leg numbness may require attention from a chiropractor or pelvic-health specialist.

Recognising these signs early helps you address issues before they become chronic. Mention any concerning symptoms when you speak with your chiropractor or doctor.

The “Don’t Rush” Philosophy: Gradual and Safe Return to Fitness

After giving birth, the body still needs time to heal. As one Australian health guide recommends, always start slowly and get medical clearance (typically at the 6 week check) before resuming high-impact workouts.

• Start Gently: Begin light activity, such as short, easy walks, a few days after birth once you feel comfortable. Walking is low-impact and boosts circulation without jarring the spine.

• Wait for Core Recovery: Avoid exercises that strain the abdomen and back (like sit-ups, crunches, or heavy lifting) until your pelvic floor and deep core muscles have had time to strengthen. Taking it easy prevents injury to your stretched and softened abdominal and back tissues.

• Focus on Low Impact: Stick with gentle movements—walking, light cycling on a stationary bike, or gentle yoga/Pilates stretches (once cleared). Research supports this: women who began low-impact exercise early (versus no exercise) saw reduced pelvic pain and improved strength. High-impact exercise too soon after birth can aggravate a still-healing core and pelvic floor.

• Progress Gradually: When you do return to harder exercise, increase intensity slowly. After about 3–4 months postpartum (and once you have full pelvic floor control), you can usually add longer walks, jogging or gym work, under guidance. Until then, respect your body’s limits.

• Listen to Warning Signs: If you feel pain, heaviness, or a sense of “give” in the pelvis, or if you see any baby blues turn to depression, ease off and seek help.

In short, don’t rush back into intense workouts. Slow, consistent progress with spinal-friendly movements lets your body rebuild without setbacks.

Foundational Movements for Spinal Recovery

Safe, spinal-friendly activities are the best way to strengthen your core and gently ease back into exercise. Try incorporating these foundational movements into your daily routine:

• Walking: Start with short walks and gradually build distance. Walking gently engages your core, improves blood flow, and helps relieve stiffness. (Health guidelines recommend beginning walking in the first weeks postpartum.)

• Pelvic Floor Exercises (Kegels): Perform daily contractions, which support the spine by lifting pelvic organs and stabilising your lower back. Imagine tightening the muscles you would use to stop urinating; hold and release multiple times.

• Gentle Core Activations: Simple moves like pelvic tilts (lying on your back, flattening your low back into the floor by tucking your pelvis) and bridges (raising hips up while squeezing glutes) engage deep core and glute muscles without crunching the spine. Coordinate these with diaphragmatic breathing – inhale to relax the pelvic floor, exhale to gently lift it – which connects core and breath for stability.

• Postural Stretching and Yoga: After your check-up, try gentle yoga or Pilates movements: cat-cow stretches for spine mobility, child’s pose to stretch the back and hips, and gentle seated twists to relieve tension. These lengthen tight muscles and help rebuild normal spine curves. Always move with control and never push into pain.

• Breathing Exercises: Practice deep belly breathing (inhaling into your diaphragm) to relax back muscles and draw in your abdominal wall. This simple act supports your spine and calms the nervous system.

According to Australian health advice, recommended early postpartum exercises are “walking, pelvic floor exercises and deep abdominal/core training.” As you progress (after six weeks), low-impact workouts like swimming, yoga, or light aerobics can be added. Your chiropractor can also suggest specific stretches or adjustments to help your pelvis and spine move correctly during these activities.

Rebuilding Strength and Alignment

Recovery after childbirth is a journey, and spinal health is a crucial part of it. By understanding how pregnancy changed your body and watching for warning signs, you can tailor a gradual exercise plan that protects your spine and core.

Gentle, low-impact movement—walking, basic core exercises, and mindful breathing—sets the foundation for full recovery. Remember that the nervous system also needs support; misalignments in your spine can interfere with nerve function, so restoring normal alignment is key.

Partnering with professionals can make a big difference. Chiropractors are trained to gently adjust the spine and pelvis, which aim to restore proper biomechanics as your tissues heal. In fact, studies suggest spinal manipulation may reduce postpartum low back pain, and continued chiropractic care may aid the recovery of normal spinal alignment.

Ultimately, a slow and steady approach—listening to your body, doing safe core and pelvic floor exercises, and getting guidance from your chiropractor or pelvic-health therapist—will ensure you rebuild strength and posture safely. With patience and support, you’ll be ready for more vigorous workouts again in time, while keeping your spine healthy and pain-free.

References

1.   Johnson C. Pregnancy and chiropractic: a narrative review of the literature. J Chiropr Med. 2009;8(3):85–94pmc.ncbi.nlm.nih.gov.
2.   Yoseph C, Mosley R, Wilke J. Pregnancy-Related Spinal Biomechanics: A Review of Low Back Pain in Pregnancy. Bioengineering. 2025;12(5):314pubmed.ncbi.nlm.nih.gov.
3. American College of Obstetricians and Gynecologists (ACOG). Physical Activity and Exercise During Pregnancy and the Postpartum Period (Committee Opinion No. 804). Obstet Gynecol. 2020;135(4):e178–e188pubmed.ncbi.nlm.nih.gov.
4. Corso M, Grondin D, Weis CA. Postpartum Low Back Pain: It is not always What You Think [case report]. Obstet Gynecol Cases Rev. 2016;3(2):079clinmedjournals.orgclinmedjournals.org.
5. Vesting R et al. The Impact of Exercising on Pelvic Symptom Severity, Pelvic Floor Muscle Strength, and Diastasis Recti Abdominis After Pregnancy: A Longitudinal Prospective Cohort Study. Phys Ther. 2023;103(12):pzac120pmc.ncbi.nlm.nih.gov.
6. Casey E et al. Pregnancy-Related Hip and Pelvis Musculoskeletal Conditions, Risk Factors, and Prevention: A Review. Ann Joint. 2023;8:54–79pmc.ncbi.nlm.nih.govpmc.ncbi.nlm.nih.gov.
7. Kulp GR et al. Maximizing Recovery in the Postpartum Period: A Timeline for Rehabilitation from Pregnancy through Return to Sport. Int J Sports Phys Ther. 2022;17(1):72–88ijspt.scholasticahq.comijspt.scholasticahq.com.
8. Weis CA et al. Chiropractic Care of Adults With Postpartum-Related Low Back, Pelvic Girdle, or Combination Pain: A Systematic Review. J Manipulative Physiol Ther. 2020;43(7):732–743pubmed.ncbi.nlm.nih.gov.
9. Better Health Channel (Victoria). Postnatal Exercise (fact sheet). State of Victoria, Dept. of Health; 2023betterhealth.vic.gov.aubetterhealth.vic.gov.aubetterhealth.vic.gov.au.
10.   Saathoff M et al. Efficacy of deep core stability exercise program in postpartum women with diastasis recti abdominis: A randomized controlled trial. J Phys Ther Sci. 2019;31(4):308–314pmc.ncbi.nlm.nih.gov.