Exercise in the third trimester: what is safe as the bump grows

What is still safe

Walking, which remains the single best option to the end — thirty minutes most days, at a pace where you can still talk in sentences.

Swimming and water exercise, which are ideal in the third trimester because the water takes the weight off the back and pelvis.

Stationary cycling, prenatal yoga with third-trimester modifications, gentle strength work with lighter weights, and pelvic-floor exercises daily.

Housework and stairs in an uncomplicated pregnancy, with sensible technique. The Indian convention of complete rest in the last months is not medical advice, and inactivity raises the risk of gestational diabetes, excessive weight gain and clots.

What to change

Reduce intensity rather than stopping. Breathlessness arrives earlier because the diaphragm has less room — use the talk test rather than a heart-rate target.

Avoid lying flat on the back for prolonged periods, and anything with a fall risk — balance is genuinely worse as the centre of gravity shifts.

Stop deep abdominal work, and watch for coning or doming of the belly, which means the exercise is too much for the abdominal wall.

Avoid overheating: exercise early morning or evening in Indian summers, indoors where possible, and drink more than you think you need.

Loosen the joints' expectations: relaxin makes everything more mobile, so avoid extreme stretching, which is easy to overdo and hard to undo.

And listen to pelvic pain. Pubic or pelvic girdle pain means modifying — smaller steps, no wide-legged movements, and a physiotherapy referral, which helps considerably.

Preparing for labour

Pelvic-floor exercises daily, and learning to relax the pelvic floor as well as contract it — that release is what is needed in the pushing stage.

Supported squats and hip-opening work, if comfortable and cleared by your doctor.

Breathing practice: slow, with a longer out-breath, practised until it is automatic. This is the part that carries into the labour room.

Walking, which keeps you mobile and is what most hospitals encourage in early labour anyway.

And stopping is fine. Some women feel excellent at 36 weeks and some can barely walk to the gate — both are normal, and the guideline is what your body allows rather than a target.

When to see a doctor

Stop and seek care immediately for: vaginal bleeding, leaking fluid, regular painful contractions, chest pain, severe breathlessness at rest, dizziness or fainting, severe headache with visual changes, calf pain or swelling, or reduced fetal movements.

Get individual advice before exercising in the third trimester if you have: placenta previa or low-lying placenta, a history of preterm labour, a cervical stitch, high blood pressure or pre-eclampsia, twins, growth restriction, or any heart or lung condition.

This article is general information, not medical advice, and is no substitute for personal medical advice. For any decision about your or your child's health, please consult your doctor.

Frequently asked questions

Q: Everyone tells me to rest completely now. — In an uncomplicated pregnancy that advice is outdated and carries its own risks. Ask your obstetrician whether any restrictions apply to you specifically; if not, keep walking.

Q: Does exercise bring on labour? — Walking does not reliably start labour, though it is comfortable and keeps you mobile. Nothing safe brings a baby before it is ready.

Q: I get Braxton Hicks when I walk. — Common. Slow down, drink water, sit and rest; they usually settle. Tightening that is rhythmic and building is different and needs a call.

Q: Is it too late to start if I have done nothing all pregnancy? — No. Start with short walks and pelvic-floor work, build gradually, and tell your doctor you are starting.