Your core is not a muscle you can simply add weight to
A postpartum core program and general strength training do two genuinely different jobs. Getting the order right matters more than getting the intensity right.
Quick answer
For most mums, a dedicated postpartum core program comes first and general strength training follows, because a core program teaches skills (breathing, pressure management, reconnecting to muscles that switched off) while strength training builds capacity (load, reps, weight). You are not choosing between them forever. Most mums start layering light strength work into their core routine within a few weeks, once they can brace and breathe under effort without doming, leaking or pain. If you have pain, a feeling of heaviness, leaking, or a gap that visibly bulges, see a women's health physiotherapist before you add load.
What each one is actually for
The confusion here is understandable. Both involve exercise, both promise a stronger body, and plenty of general programs now advertise a postnatal option. But they are solving different problems.
A postpartum core program is rehabilitation-shaped. It assumes your abdominal wall has been stretched over nine months, that your pelvic floor has been through either a vaginal birth or the load of pregnancy plus surgery, and that the coordination between your diaphragm, deep abdominals and pelvic floor needs re-teaching before it needs challenging. Strength training assumes that coordination already works and sets about making it stronger.
Load a system that is not coordinating yet and the pressure has to go somewhere. That is the whole argument in one sentence.
| Postpartum core program | General strength training | |
|---|---|---|
| Main job | Restore coordination and control | Build capacity and strength |
| Starts with | Breath, ribcage position, deep core | Movement patterns and progressive load |
| Assumes about you | Your system needs re-teaching | Your system already coordinates |
| Typical early session | 10 to 15 minutes, floor-based, low effort | 30 to 60 minutes, standing, moderate effort |
| Best first if | You have doming, leaking, a gap, or you have not exercised since birth | You have already rebuilt control and have no symptoms under load |
| Risk if done too early | Very low; the main cost is time | Symptoms can be provoked or reinforced |
If you are not sure which side of that table you are on, the fastest way to find out is a simple self-check at home, followed by an honest look at what happens when you exert yourself.
Why the order matters more than the intensity
Abdominal separation is not a rare complication. It is close to the default state of a body that has just grown a baby, and it resolves for many women without any intervention at all over the first year.
of women had diastasis recti at six weeks postpartum (Sperstad et al., British Journal of Sports Medicine, 2016)
still had it at twelve months postpartum in the same cohort, showing natural recovery is real but incomplete
is the usual timing of the postnatal check in the UK, per the NHS, and a sensible gate before higher-load exercise
60%
45.5%
32.6%
Source: Sperstad et al., British Journal of Sports Medicine, 2016.
Read that curve carefully, because it cuts both ways. The downward slope is the good news: tissue recovers. The flattening tail is the warning: for roughly a third of women, twelve months of ordinary life did not finish the job on its own. Those are the mums for whom what you do, and the order you do it in, actually changes the outcome.
The mechanism is pressure. Every time you exert yourself, pressure rises inside your abdomen and has to be managed by the container around it. When that container is coordinating well, pressure is shared. When it is not, pressure pushes out through the softest point, which after birth is usually the midline or downward through the pelvic floor. This is the idea behind intra-abdominal pressure, and it is why the same exercise can be perfectly safe for one mum and provocative for another.
When strength training first is genuinely the right call
Honesty matters more than a tidy rule here. There are mums who do not need to start on the floor.
- You were lifting through pregnancy and had an uncomplicated birth. Your coordination may never have fully switched off. A short reassessment, not a full rebuild, may be all you need.
- You are well past the early months with no symptoms. No doming, no leaking, no heaviness, no back pain under load. Strength training with sensible progression is reasonable.
- Your main goal is not your midline. If you want to feel capable carrying a toddler and a pram up stairs, general strength work delivers that directly.
- You have been cleared and coached in person. A women's health physio who has assessed you and cleared you for load has better information than any article.
What does not qualify is feeling impatient. Impatience is normal and it is not a clinical finding. After a caesarean the picture is different again, and worth reading separately in our guide to starting strength training after a C-section.
How to layer the two together
In practice, most mums do best treating this as three overlapping phases rather than two separate camps.
Phase one: skills only
Breath first, always. Learning to expand the lower ribs on the inhale and let the pelvic floor and deep abdominals respond on the exhale is the single foundation everything else is built on. If you have done nothing since birth, deep core breathing is the place to begin. Ten minutes is plenty.
Phase two: skills under light load
Here the two worlds start to merge. You keep your core work, and you add bodyweight squats, hip hinges, carries and rows, deliberately timing your exhale to the hardest part of each rep. Getting this timing automatic is the bridge between the two approaches, and it is worth practising on its own before the weights get meaningful. We have walked through exactly how in the exhale-on-effort breathing technique.
Phase three: strength, with core work kept as maintenance
Once light load is symptom-free, load can climb. Most mums keep a short core routine going alongside, in the same way you would keep stretching alongside running. If you would rather follow a month-by-month structure than assemble it yourself, our postpartum core workout by month lays out the progression.
Signs you have added load too soon
None of these mean you have done damage. They mean your body is telling you the load has outrun the coordination, and the fix is usually to go back a step for a fortnight rather than to stop entirely.
- A visible ridge or bulge down the midline during effort. If you are not sure what you are looking at, coning and doming explained covers the difference.
- Any leaking of urine during or after a session, even a small amount.
- A dragging or heavy feeling in the pelvis, particularly later in the day.
- Low back or pelvic pain that is new, or that arrives the day after training.
- Holding your breath to complete a rep, which is a signal the load is too high for your current control.
High-intensity formats deserve particular caution in the early months, for the simple reason that they combine speed, impact and fatigue at the same time. Our guide to whether HIIT is safe postpartum goes into the trade-offs.
What each route realistically costs
Cost is a legitimate part of this decision and it varies enormously by country, so treat any figure you read online with suspicion unless it names a currency and a date. What is worth comparing is the shape of the spend rather than the number.
In-person physiotherapy is the most expensive per hour and the most valuable per hour, because it is the only option that assesses your actual body. Gym memberships and app subscriptions are recurring, which means the cost keeps running whether or not you open them, and postpartum recovery is rarely a linear twelve months of consistent training. A one-time guide is the cheapest and the least personalised. We have broken the numbers down further in what it costs to address diastasis recti.
The verdict
Start with the core program if you have symptoms, if you have not exercised since birth, or if you are unsure. Start with strength training if you have been assessed, have no symptoms under effort, and were already training. In both cases, the destination is the same: a body that can carry load without leaking, doming or hurting. The core program is not a lesser version of strength training, and strength training is not a graduation certificate. They are two halves of one recovery.
If you want the skills phase done for you
The Core Reconnect Program is our one-time, no-subscription guide to the first phase: breath, deep core reconnection and pressure management, built for ten to fifteen minute sessions while the baby naps. It is the affordable, pay-once alternative to ongoing memberships, and you keep it for good. Use code GLOW20 for 20% off. Results vary from mum to mum.
Frequently asked questions
Can I do a postpartum core program and strength training in the same week?
Yes, and most mums eventually do. The usual pattern is a short core session on most days and two or three strength sessions a week. What matters is that the strength sessions stay symptom-free. If they do not, reduce the load rather than dropping the core work.
How long should I spend on the core program before adding weights?
There is no fixed number, and any program promising one is guessing. The honest marker is capability rather than calendar: when you can perform a bodyweight squat, a hip hinge and a loaded carry while breathing out on effort, with no doming, leaking or pain, you are ready to progress. For some mums that is a few weeks, for others considerably longer.
Will lifting weights make diastasis recti worse?
Lifting itself is not the problem. Lifting with poor pressure management is what provokes symptoms, and that is a technique issue rather than a weight issue. Many women with a history of abdominal separation lift heavy safely once coordination is rebuilt. If you see doming during a lift, that specific lift at that specific load is too much for now.
Do I need clearance from my doctor first?
Returning to exercise after birth is usually discussed at the postnatal check, which the NHS schedules at around six weeks. The American College of Obstetricians and Gynecologists notes that activity can often resume gradually once it is medically safe, and that timing is individual rather than fixed. If you had a caesarean, a complicated birth, or any ongoing symptoms, speak to your GP, midwife or a women's health physiotherapist before adding load.
Is walking enough on its own?
Walking is excellent for circulation, mood and gentle reconditioning, and it is a genuinely good place to restart. It does not, on its own, retrain the coordination between your diaphragm, deep abdominals and pelvic floor, because it does not demand much of that system. Think of walking as the base you build on rather than the whole plan.
Sources: Sperstad JB et al., "Diastasis recti abdominis during pregnancy and 12 months after childbirth", British Journal of Sports Medicine, 2016; American College of Obstetricians and Gynecologists, Physical Activity and Exercise During Pregnancy and the Postpartum Period; NHS, Your postnatal check and Keeping fit and healthy with a baby; Royal Australian and New Zealand College of Obstetricians and Gynaecologists, Exercise during pregnancy and the postpartum period; Cleveland Clinic, Diastasis Recti.
This article is general education, not medical advice, and Mumma Glow is not affiliated with any program, gym or app mentioned. Results vary from mum to mum. Always see your GP, midwife or a women's health physiotherapist for advice about your own recovery, particularly if you have pain, leaking, a feeling of heaviness, or a separation that is not improving.