Breathwork During Pregnancy: Which Breathing Exercises Are Safe

This guide is maintained by the team behind Vayu, a breathwork app built by Prana Labs. It applies the same standard we use to decide which techniques the app recommends, to whom, and which it holds back. It is general education rather than medical advice, and it does not diagnose or replace the judgement of a clinician who knows your history.

Short answer: slow, gentle breathing is generally suitable for most people with an uncomplicated pregnancy. That means relaxed diaphragmatic breathing, a comfortably lengthened exhale, and unhurried paced breathing, practised sitting up or lying on your side. What to skip: long breath holds, bearing down while holding your breath, and rapid or forceful techniques such as Kapalbhati, Bhastrika, and Wim Hof-style breathing. If your pregnancy is high risk, or you have been told to limit physical activity, ask your midwife or obstetric provider before starting any structured breathing practice.

This is general education, not medical advice. Every pregnancy is different. If anything in this guide conflicts with advice from your own midwife, obstetrician, or GP, follow theirs.

Is breathwork safe during pregnancy?

It depends on the kind. Breathing practices fall into two groups with very different risk profiles. Slow, low-intensity breathing reduces breathing rate and effort, and it is close to what antenatal classes already teach for relaxation and labour. High-intensity breathing, which drives the breathing rate up, forces the exhale with the abdominal muscles, or holds the breath for long periods, produces fast changes in blood chemistry and abdominal pressure. Almost every caution in this guide applies to the second group.

Obstetric guidance is broadly supportive of physical activity in an uncomplicated pregnancy, with specific activities singled out for caution [1][3]. ACOG's patient guidance notes that yoga encourages focused breathing and recommends modified or prenatal yoga [2]. Small studies of prenatal yoga in low-risk pregnancies have not found acute harmful effects on mother or baby, though the trials are few and small [5][6][7]. Gentle breathing sits comfortably inside that guidance. Forceful breathing and long retention are the parts of breathwork that fall outside it.

Which breathing exercises are generally suitable in pregnancy?

Technique	How to do it	Notes
Diaphragmatic breathing	Relaxed breathing into the lower ribs and belly at a natural pace	The simplest starting point; no pressure changes or holds
Extended exhale	Inhale for about 4, exhale gently for about 6	Calming without retention; shorten both counts if you feel short of breath
Slow paced breathing	An even, unforced rhythm, slower than usual but never strained	Let comfort set the pace; pregnancy can make slow counts feel harder
Alternate nostril breathing	Slow breaths alternating between nostrils, with no holds	Skip the retention phases often taught with it

Pregnancy also changes how breathing feels, and a pace that was easy before may feel harder now. The right pace is the one that feels easy today, not the one you managed last month. The NHS suggests a simple check for exercise in pregnancy: if you are too breathless to talk, you are probably working too hard [3]. The same applies to breathing practice. If a count feels like work, shorten it.

Which breathing techniques should you avoid while pregnant?

• Long breath holds. Brief, comfortable pauses are fine for most people. Extended retention, including the long holds in some pranayama sequences and 4-7-8 breathing if the 7-count hold feels strained, is best left out.
• Holding your breath while straining. Bearing down against a held breath (the Valsalva manoeuvre) produces significant changes in pressure and circulation [8], and earlier pregnancy exercise guidance cited it as a reason for caution with heavy strength training [1]. Outside labour itself, where your midwife will guide you, it is worth avoiding.
• Forceful abdominal techniques. Kapalbhati and Bhastrika use repeated, strong contractions of the abdominal muscles. NCCIH advises newcomers to yoga to avoid extreme practices including forceful breathing, and says people who are pregnant should talk to a clinician before starting yoga [4].
• Rapid breathing and hyperventilation methods. Wim Hof-style breathing, holotropic and rebirthing styles lower carbon dioxide sharply and can cause dizziness and fainting.
• Lying flat on your back for long sessions later in pregnancy. ACOG and the NHS both advise against long periods lying flat on your back, the NHS particularly after 16 weeks, so practise sitting up, reclined on pillows, or lying on your side [2][3].
• Heated rooms. Breathwork done as part of hot yoga adds the risk of overheating, which ACOG and NCCIH both specifically flag in pregnancy [2][4].

Can breathing exercises help with labour?

Breathing and relaxation techniques are a familiar part of antenatal classes. They are a support rather than a replacement for other pain relief, and the technique you use in labour is best learned from your midwife or an antenatal class, since it changes with the stage of labour. Practising slow, relaxed breathing during pregnancy is a reasonable way to become familiar with the rhythm in advance.

What should you do if you feel dizzy or breathless during practice?

Stop, return to normal breathing, and sit down, or lie on your side if you were lying down. Mild lightheadedness that passes within a minute usually means the pace or depth was too much. Breathlessness that comes on before any exertion, chest pain, or dizziness that does not settle are different, and they belong on the list below.

When should you talk to a clinician?

Talk to your midwife, obstetric provider, or GP before starting breathwork, and stop any practice and seek advice promptly, if:

• you have been told your pregnancy is high risk, or advised to limit exercise
• you have a heart or lung condition, high blood pressure, or pre-eclampsia
• you notice vaginal bleeding, fluid leaking, or regular painful contractions
• you feel short of breath before exertion, or have chest pain
• you feel dizzy or faint, or have a headache that does not settle
• you have calf pain or swelling, or muscle weakness affecting your balance

Several of these are the same warning signs ACOG gives for stopping any exercise in pregnancy [1][2].

Key points

• Slow diaphragmatic breathing, a gently lengthened exhale, and unforced paced breathing suit most uncomplicated pregnancies.
• Skip long breath holds, breath-held straining, forceful techniques like Kapalbhati and Bhastrika, and hyperventilation methods.
• Practise sitting up or on your side rather than flat on your back later in pregnancy, and never in a heated room.
• Let comfort set the pace, and shorten counts whenever breathing feels like work.
• If your pregnancy is high risk, ask your midwife or obstetric provider before starting.

How Vayu applies this

Vayu leads with slow, low-intensity breathing, the group this guide describes as generally suitable, and paces it with haptic cues on Apple Watch and Wear OS so you can practise with your eyes closed in whatever position is comfortable. It reads HRV from the watch after each session to inform what it suggests next. Forceful techniques are in the app for people who want them, but they are not what it recommends first, and pregnancy is one of the conditions our breathwork safety guidelines ask you to discuss with your clinician. For the full picture of who should avoid which techniques, see breathwork contraindications, and for a slow, hold-free practice, alternate nostril breathing without retention is a gentle place to start.

Sources

1. American College of Obstetricians and Gynecologists. Physical Activity and Exercise During Pregnancy and the Postpartum Period. Committee Opinion No. 804. Obstet Gynecol. 2020;135(4):e178-e188. www.acog.org/clinical/clinical-guidance/committee-opinion/articles/2020/04/physical-activity-and-exercise-during-pregnancy-and-the-postpartum-period
2. American College of Obstetricians and Gynecologists. Exercise During Pregnancy (patient FAQ). www.acog.org/womens-health/faqs/exercise-during-pregnancy
3. NHS. Exercise in pregnancy. www.nhs.uk/pregnancy/keeping-well/exercise/
4. National Center for Complementary and Integrative Health. Yoga: Effectiveness and Safety. www.nccih.nih.gov/health/yoga-effectiveness-and-safety
5. Babbar S, Parks-Savage AC, Chauhan SP. Yoga during pregnancy: a review. Am J Perinatol. 2012;29(6):459-464. doi.org/10.1055/s-0032-1304828
6. Babbar S, Hill JB, Williams KB, et al. Acute feTal behavioral Response to prenatal Yoga: a single, blinded, randomized controlled trial (TRY yoga). Am J Obstet Gynecol. 2016;214(3):399.e1-399.e8. doi.org/10.1016/j.ajog.2015.12.032
7. Polis RL, Gussman D, Kuo YH. Yoga in pregnancy: an examination of maternal and fetal responses to 26 yoga postures. Obstet Gynecol. 2015;126(6):1237-1241. doi.org/10.1097/AOG.0000000000001137
8. Srivastav S, Jamil RT, Dua A, Zeltser R. Valsalva Maneuver. StatPearls. NCBI Bookshelf. www.ncbi.nlm.nih.gov/books/NBK537248/