Can You Do Reformer Pilates While Pregnant? (Yes — But Here’s What to Know)

For most women with an uncomplicated pregnancy, reformer Pilates is one of the safest, smartest ways to stay strong — with your doctor's okay and the right modifications. It is gentle, low-impact, and brilliant for the core, pelvic floor, and posture that pregnancy challenges. After 25 years building reformers at The Core Collab and working with prenatal clients, here is the honest, safety-first guide. This is general information, not medical advice — always check with your GP, obstetrician, or midwife first.

Can you do reformer Pilates while pregnant?

Yes — usually. If your pregnancy is healthy and uncomplicated, and your doctor has cleared you to exercise, reformer Pilates is well suited to pregnancy. It is low-impact, the spring resistance is easy to scale back, and the carriage supports your body. If you have any complications, or you are unsure, get medical clearance before you start or continue.

Is reformer Pilates safe during pregnancy?

For most women, with clearance, yes. The keys are modification and listening to your body. Pregnancy hormones (especially relaxin) loosen your joints, so you avoid over-stretching. Your balance shifts as your bump grows, so you slow down and stay controlled. A qualified prenatal-aware instructor makes a real difference. The Core Collab's position, after two decades around studios: pregnancy is a time to modify and maintain, not to push for personal bests.

The benefits of reformer Pilates during pregnancy

• Pelvic floor strength — supports your changing body and aids recovery after birth.
• Core stability — eases the lower-back load a growing bump creates.
• Better posture — counters the forward pull of pregnancy.
• Less back pain — a very common pregnancy complaint Pilates helps manage.
• Birth preparation — controlled breathing and stamina for labour.
• Gentle, low-impact movement — kind on joints already under strain.

Reformer Pilates by trimester

Exercises and positions to avoid when pregnant

How to modify the reformer for pregnancy: springs, footwork and lying down

The reformer is easier to adapt for pregnancy than almost any other piece of gym equipment, because almost everything about it can be adjusted: the springs, the headrest, the footbar and the position you work in. These are the changes I make most often with prenatal clients. They don't replace advice from your own care provider.

The AUSactive Pregnancy & Postnatal Exercise Guidelines list what to avoid. They include breath holding, high-impact or jerky movements, sudden changes of position, any exercise that places significant load on the abdominals or pelvic floor, and lying supine from 16 weeks onwards. In their place they recommend four-point kneeling, sitting on a fit ball and side lying. The American College of Obstetricians and Gynecologists gives similar advice in its exercise during pregnancy FAQ, which recommends modified Pilates classes and avoiding poses that require you to lie on your back for long periods.

For hip and lower-back comfort, the Core Collab Pregnancy Wedge ($299) sits under the hips to align the spine and pelvis. It is the prop our prenatal clients ask about most. If you're training at home, the Core Collab Foldable Eco ($2,799) has 6 springs, which gives you enough steps to drop the load gradually as your pregnancy progresses.

Can you start reformer Pilates for the first time while pregnant?

Often, yes, but start gently, with clearance, and with an instructor who has prenatal training. AUSactive notes that the old advice told women who didn't exercise not to start strenuous programs in pregnancy. More recent evidence shows moderate exercise does not increase adverse pregnancy outcomes in healthy pregnancies. The key word is moderate. Your first reformer class while pregnant is not the time to learn advanced repertoire. Begin with a few private or small-group sessions so someone can set the springs and positions for you.

How long into pregnancy can you keep doing reformer Pilates?

There is no single cut-off week. Many women keep training through the second trimester (from 13 weeks) and into the third (from 28 weeks), some right up to 40 weeks, with clearance from their care provider. What changes is the work itself: shorter range, more side-lying and seated work, and more rest. The ACOG benchmark is at least 150 minutes of moderate-intensity activity a week for healthy pregnancies, for example 30 minutes on 5 days. Two or three reformer sessions can make up part of that. Stop and call your doctor or midwife if you notice any of the warning signs listed above.

When to stop and check with your doctor

Stop and seek advice if you have bleeding, fluid leakage, dizziness, chest pain, painful contractions, calf pain or swelling, or reduced baby movement. These are not "push through it" symptoms. When in doubt, rest and call your care provider. No workout is worth a risk to you or your baby.

Doing reformer Pilates at home during pregnancy

A home reformer lets you train gently, at your own pace, on your own schedule — no class timetable, no crowded studio, and you can stop the moment you need to. For many pregnant women that control is exactly what makes movement sustainable. If you are setting up at home, our Core Collab Eco Folding reformer is a gentle, space-friendly option; see the full reformer range. Always pair home practice with guidance from a prenatal-aware instructor.

Returning to the reformer after birth: a postnatal timeline

I'm Jennifer Grehan. I've taught Pilates for more than 20 years, and I'm a mum of three boys, so I know how much Pilates helped me feel like myself again after having them. I also know how tempting it is to rush back. The AUSactive guidelines set out a phased return, and it's the framework The Core Collab teaches in its Pre and Post Natal Pilates Certification ($399, online):

AUSactive also notes that a caesarean birth, abdominal separation (rectus diastasis), an assisted delivery, a long second stage (over 2 hours) or a baby over 4 kg may call for further modification. The most useful appointment you can make is with a women's or pelvic health physiotherapist. You shouldn't feel back pain, pelvic or vaginal heaviness, or leak urine during or after a session. If you do, slow down and get assessed. The reformer is a good place to come back to because the springs let you load in small steps, but the timeline is set by your body, not the calendar.

The bottom line

For most healthy pregnancies, reformer Pilates is a safe, joint-friendly way to stay strong, ease back pain, and prepare for birth — provided you have your doctor's clearance, modify as you grow, and stop if anything feels off. Done sensibly, it is one of the best forms of movement for pregnancy. For trusted guidance on exercising while pregnant, see Pregnancy, Birth & Baby (Australian Government), and for the method itself the Pilates Method Alliance. If you are an instructor wanting to teach prenatal clients, explore our pre & post-natal certification.

FAQs

Can you do reformer Pilates while pregnant?

Yes, for most women with an uncomplicated pregnancy and a doctor's clearance. It is low-impact and easy to modify. Get medical advice first if you have any complications.

Is reformer Pilates safe in the first trimester?

Often yes if you already exercise and are cleared to continue — keep it gentle and manage fatigue. Always confirm with your doctor, especially if Pilates is new to you.

What reformer exercises should I avoid when pregnant?

Avoid lying flat on your back after the first trimester, deep abdominal crunches, prone (stomach-down) work, deep twists, and any over-stretching. Stop if anything causes pain or dizziness.

Can I do reformer Pilates at home while pregnant?

Yes, with clearance and modifications. A home reformer lets you move gently at your own pace. Pair it with guidance from a prenatal-aware instructor and stop if you feel unwell.

How long into pregnancy can you do reformer Pilates?

There's no fixed cut-off. With your care provider's clearance, many women continue into the third trimester using shorter range, side-lying and seated work, and no lying flat on the back from around 16 weeks.

When can I go back to reformer Pilates after giving birth?

AUSactive recommends waiting for your postnatal check at about 6 weeks before returning to classes, and having your pelvic floor and abdominals assessed before higher-impact work at around 12–16 weeks. Caesarean births and abdominal separation may need longer.