Pilates During Pregnancy and Postpartum

Let’s start with what can’t be skipped: to train during pregnancy or after giving birth, you need your doctor’s approval. This isn’t a formality or a line we use to cover ourselves. Every pregnancy is different, some conditions rule out exercise entirely, and the person with the information to decide that is the one managing your prenatal care.

With that clear, here’s what we can explain: what changes in your body, why pilates tends to adapt well to these stages, and where the limits are.

Why Pregnancy Changes the Equation

Three things happen at once, and all three affect how you move.

Your center of gravity shifts forward as the uterus grows. The pelvis tilts, the lower back curve becomes more pronounced, and the low back muscles work harder than they’re used to. That’s why lower back pain is so common in the second and third trimester.

Relaxin and other hormones increase ligament laxity to prepare for delivery. That gives your joints more range than usual, and makes it easier to reach a range you can’t control. In practice that means: this isn’t the moment to chase more flexibility, it’s the moment to work on stability.

The abdominal muscles stretch and separate. That’s normal, and it happens to most women. What matters is how it’s managed during and after.

What Changes Each Trimester

This isn’t a protocol, it’s a general map so you understand why your exercises are going to change.

First trimester. If your pregnancy is progressing normally and you already trained, you can generally continue with adaptations. If you’ve never done pilates, pregnancy isn’t the best time to start something intense, but it is a good time to start something gentle and supervised. Nausea and fatigue tend to be the biggest limiting factor, not the technique.

Second trimester. This is where the most noticeable changes show up. Flexion-based abdominal work — classic crunches — gets pulled because it increases pressure on the midline and doesn’t help anything. Time spent on your back also gets limited, because the weight of the uterus can compress the vena cava and cause dizziness or low blood pressure. It’s not an absolute or instant ban, but it’s why your coach will ask you to reposition on your side or semi-reclined.

Third trimester. The goal stops being progress and becomes maintaining mobility, relieving lower back load, and arriving at delivery active. Less range, more support, shorter sessions if needed.

The reformer has a concrete advantage here: it lets you work in semi-reclined, side-lying, or seated positions, with spring load instead of body weight, and with the option to lower the intensity without stopping moving altogether.

Abdominal Diastasis

It’s the topic that gets talked about the most and explained the worst.

During pregnancy, the two sides of the rectus abdominis separate because the connective tissue that joins them — the linea alba — stretches. It happens to the vast majority of women by the end of pregnancy, and it’s not an injury: it’s a normal adaptation.

What matters is how it evolves afterward. In many women, it closes on its own over the following months. In others, a separation persists with tissue that doesn’t generate tension, and that can be associated with low back discomfort, a feeling of weakness in the center, or a belly that domes under effort.

Two things worth being clear about:

It’s not measured on your own with a video from the internet. The assessment is done by a health professional — a physical therapist specialized in pelvic floor, an OB-GYN — and it’s not just about how many fingers fit, but whether the tissue generates tension.

It’s not fixed with crunches. Repeated flexion work is exactly what tends to worsen pressure on the midline. What’s trained is coordination between breath, transverse abdominis, and pelvic floor, and management of intra-abdominal pressure. It’s unglamorous work, and very effective.

Pelvic Floor: Why “Just Do Kegels” Isn’t the Answer

This is the part almost nobody explains well.

The pelvic floor is a muscle group that has to do two things: contract when it needs to and relax when it needs to. Problems can come from a weak pelvic floor, but also from a hypertonic one — permanently tense and unable to let go.

If your pelvic floor is hypertonic and you start doing Kegels, you’re squeezing something that already doesn’t know how to release. It can make the pain worse, along with discomfort during sex and even urinary urgency.

That’s why the honest recommendation is: before starting a pelvic floor program, get assessed by a physical therapist who specializes in it. A pilates studio can support and reinforce that work, but it can’t diagnose what your pelvic floor needs.

And something worth saying out loud: leaking urine when you cough, laugh, or jump is common after giving birth, but it isn’t normal, and it isn’t something you have to accept. It’s treatable. If it happens to you, it’s worth getting it checked.

Returning to Training After Delivery

There’s an idea going around that at six weeks, you’re cleared for everything. That’s not how it works.

The six-week checkup is a medical visit that confirms healing is on track and there are no complications. It’s an administrative minimum, not clearance to return to your previous level. Even with medical clearance, real recovery of the tissue, the pelvic floor, and the abdominal wall takes months.

After a vaginal delivery, with medical clearance, you typically start with breathing, gentle mobility, and progressive activation. No impact and no heavy load at the start.

After a C-section, there’s also a multi-layer tissue scar that needs time and, often, specific scar mobility work. The progression is slower, and it’s worth being assessed before loading the abdomen.

If you’re breastfeeding, ligament laxity can persist for a while due to hormone levels. That’s one more reason not to force ranges.

The rule that works best: progress by symptoms, not by the calendar. If an exercise causes pelvic heaviness, urine leaks, pain, or makes your belly dome along the midline, that exercise isn’t ready yet. It’s not about toughing it out.

Red Flags: Stop Immediately and See a Doctor

During pregnancy:

• Vaginal bleeding or fluid leakage
• Regular contractions or abdominal pain
• Severe headache, blurred vision, or sudden swelling in the face and hands
• Dizziness, fainting, or shortness of breath that doesn’t go away with rest
• Chest pain or calf pain
• A noticeable decrease in the baby’s movements

Postpartum:

• Increased bleeding after training
• Heaviness or a sensation of bulging in the vagina
• Urine or gas leakage that appears or worsens with exercise
• Pain or discharge at the scar
• Fever

None of these is “normal because you exercised.” All of them warrant a medical visit.

What We Offer and What We Don’t

I want to be exact here, because exaggeration does real harm on this topic.

Naü doesn’t have an independently certified prenatal program. What we do is adapt our classes — mainly reformer and mat — for pregnancy and postpartum, with medical clearance and with you telling us your stage, your type of delivery, and any guidance from your specialist.

For specific pelvic floor work and diastasis assessment, the right move is a specialized physical therapist. We can support that process, not replace it.

If you’re pregnant or postpartum and want to train with us, message us on WhatsApp before you buy any package. We’ll tell you which classes and schedules fit where you are, and if it’s better to wait, we’ll tell you that too.

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This article is for information only and doesn’t replace your doctor’s assessment. Every pregnancy and every recovery is different.

If you already have medical clearance and want to start, you can check out how the reformer works or read the first-time guide.