Are aquanatal classes safe during pregnancy?
Aquanatal classes — water-based exercise classes specifically designed for pregnancy — are widely recommended as one of the safest and most enjoyable ways to stay active throughout pregnancy. They combine the joint-friendly, buoyant support of water (similar to general swimming) with structured, pregnancy-specific choreography led by an instructor trained in antenatal exercise.
Why aquanatal classes suit pregnancy so well
Buoyancy removes joint strain. As with swimming, water supports the majority of your body weight, taking pressure off joints, the pelvis, and lower back that carry increasing load as pregnancy progresses.
Structured and instructor-led. Unlike swimming alone, an aquanatal class is guided by an instructor who understands pregnancy-safe movement, adapts pace and exercises to different trimesters, and can modify moves for individual needs or discomfort.
No fall risk. Balance changes are a real concern with many land-based classes as the bump grows; water removes this concern entirely.
Social benefit. Aquanatal classes bring together other pregnant women at a similar stage, which many find valuable for support and shared experience alongside the physical benefit.
Low overheating risk. Water keeps core body temperature down naturally, unlike a land-based aerobics class of similar intensity.
What a typical class involves
Aquanatal classes typically combine gentle cardiovascular movement (walking or jogging through water, arm and leg movements against water resistance), light resistance work using the water itself or pool noodles/floats, and stretching or relaxation, often finishing with pelvic floor exercises which are easier to isolate and feel in water.
What to check before joining
- Confirm the class is specifically an aquanatal class, taught by an instructor with antenatal training, rather than a general aqua aerobics class not designed with pregnancy in mind.
- Check the pool temperature is within the standard safe range (around 27–30°C) — avoid anything advertised as a “hot” aqua class.
- Most instructors will ask which trimester you’re in and any relevant health information before your first class — this is normal and helps them tailor the session.
How much is recommended?
A weekly aquanatal class fits comfortably within the NHS recommendation of 150 minutes of moderate activity per week, and can be combined with other activity like walking on non-class days.
When to stop and seek advice
Stop and contact your midwife if you experience:
- Abdominal pain or cramping during or after class
- Dizziness, light-headedness, or feeling faint
- Any vaginal bleeding or fluid leakage
- Significant shortness of breath beyond what feels manageable
- New or worsening pelvic girdle pain