Pregnancy changes how your body moves, breathes and balances, sometimes from one week to the next. Yoga can be a calm, steady companion through those changes, but only if the practice changes with you. A class that felt easy before pregnancy may need rethinking now.
I’ve trained in prenatal yoga, and this post shares what a trained instructor watches for when a pregnant student walks in: what to change, what to avoid and which warning signs mean you should stop. If you’re new to yoga altogether, read my beginner’s guide to yoga classes in Hong Kong as well. This post is general information, not medical advice, so please speak to your own doctor or midwife.
Start with your doctor or midwife
Before your first prenatal class, check with your doctor or midwife that exercise is right for you. Most healthy pregnancies can include gentle yoga, but Mayo Clinic notes that it may not suit people at higher risk of preterm labour or with certain conditions, such as heart disease or back problems.
Once you have the all-clear, tell your yoga teacher three things: how many weeks pregnant you are, how you’re feeling that week, and anything your doctor has asked you to avoid.
What a trained prenatal instructor looks for
A good prenatal teacher isn’t just leaving out a few poses. They’re watching for changes that are easy to miss.
- Your balance. As your bump grows, your centre of gravity shifts. Expect more poses near a wall or with a chair for support.
- Room for the baby. Feet wider apart, knees apart in forward bends, and no poses that press on the belly.
- Loose joints. Pregnancy hormones soften the ligaments, so it’s easier to overstretch. A trained teacher keeps stretches moderate, even if you feel more flexible than usual.
- Heat. Overheating is a real concern in pregnancy. In Hong Kong’s humid months, that means a cool, well-ventilated room, water within reach and no rushing.
- Breathing. You should be able to talk normally while you practise. If you can’t, the pace is too hard.
- Your energy that day. Some days call for strength, others for rest. A good teacher adapts the class to the week you’re having.
Poses and practices to avoid or change
| Avoid | Why | Try instead |
|---|---|---|
| Lying flat on your back for long, especially later in pregnancy | Can cause dizziness and reduce comfort as the bump grows | Lie on your side, or rest propped up on cushions |
| Lying on your belly | Puts pressure on the abdomen | Hands and knees, or side-lying poses |
| Deep or closed twists | Compress the abdomen | Gentle open twists from the upper back |
| Deep backbends and forward bends | Strain the back and press on the belly | Mild chest opening, forward bends with feet wide |
| Strong core work, such as crunches or boat pose | Too much pressure through the abdomen | Gentle pelvic tilts on hands and knees |
| Hot or heated yoga | Risk of overheating | A cool, ventilated room |
| Breath-holding or forceful breathing | Not suited to pregnancy | Slow, even breathing |
Mayo Clinic recommends prenatal, Hatha or restorative yoga during pregnancy and advises avoiding hot yoga, lying on the back or belly, deep bends and twists that compress the abdomen. When in doubt, choose a class designed for pregnancy.
How practice changes through the trimesters
Every pregnancy is different, so treat this as a general guide.
- First trimester. Tiredness and nausea are common. Keep sessions gentle and short, and rest whenever you need to.
- Second trimester. Energy often returns. Start making room for the bump, widen your stance and move away from long periods lying flat on your back.
- Third trimester. Balance and comfort take priority. Use props generously, keep sessions shorter if needed, and focus more on breathing, gentle movement and rest.
Warning signs: stop and contact your doctor
Stop practising and call your doctor or midwife straight away if you notice:
- pain in the belly, back or pelvis
- vaginal bleeding or fluid leaking
- regular or painful contractions
- your baby moving less than usual
- dizziness, faintness or a severe headache
- chest pain, or feeling short of breath before you start
- pain or swelling in your calf
None of these are things to push through, in yoga or anywhere else.
Group class or private sessions?
A prenatal group class lets you practise alongside others at the same stage, which many people find reassuring. Private sessions adapt completely to how you feel each week, which helps if you have discomfort, a complication or simply want more attention. I’ve written more about private sessions during pregnancy and how they compare with group coaching.
Breathing through pregnancy
Slow, steady breathing is one of the most useful parts of prenatal yoga. It can help you settle when you feel anxious and stay calm through discomfort. Skip anything that involves holding the breath or breathing forcefully, and stick to gentle breathing exercises such as belly breathing and a slightly longer exhale.
Questions to ask a prenatal yoga teacher
- Have you trained specifically in prenatal yoga?
- How do you adapt poses for each trimester?
- How warm is the room?
- Is the class designed for pregnancy, or a general class with changes?
- What should I do if I feel unwell during class?
Frequently asked questions
Is prenatal yoga safe?
For most healthy pregnancies, gentle prenatal yoga is considered safe once your doctor or midwife agrees. Choose a teacher trained in prenatal yoga and avoid hot or strenuous classes.
When can I start prenatal yoga?
Ask your doctor or midwife, as advice depends on your health and pregnancy. Many people start in the second trimester, when energy returns, but gentle practice is often possible earlier.
Can I go to normal yoga classes while pregnant?
Only with care. Tell the teacher you’re pregnant, avoid poses that compress or strain the belly, and skip heated classes. A class designed for pregnancy is usually the safer choice.
Which yoga poses should I avoid when pregnant?
Avoid lying flat on your back for long, lying on your belly, deep twists, deep backbends, strong core work and hot yoga. A trained teacher will offer alternatives.
Is hot yoga safe during pregnancy?
No. Hot yoga raises the risk of overheating and is best avoided throughout pregnancy.
What should I tell my yoga teacher if I’m pregnant?
Tell them how many weeks pregnant you are, how you’re feeling that day and anything your doctor has asked you to avoid.
Move with your pregnancy, not against it
Prenatal yoga isn’t about doing less. It’s about doing what your body needs right now, with a teacher who notices the small changes. Check with your doctor or midwife, find a trained instructor, and let your breath set the pace.
This post is general information and not a substitute for medical advice.