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Safe Exercises During Pregnancy: Your Trimesters Movement Guide

  • December 19, 2025

Stay Strong, Stay Flexible: Modifications and Must-Know Tips for Every Mum-to-Be

Growing a human is, quite literally, a marathon. Your body is doing incredible, demanding work, and while re-sting is crucial, movement is just as important. For many mums-to-be, exercising is one of the best ways to manage pregnancy discomfort, boost energy, improve sleep, and prepare the body for labour and recovery. But when everything is shifting your balance, your energy levels, and even your joints, knowing which movements are safe exercises during pregnancy can be confusing. Are crunches still okay? When should I stop running? And what on earth is a pelvic floor?

Don't worry, mama. We're here to cut through the confusion and provide a guide, with the support of health experts, on how to keep moving confidently and safely, trimester by trimester. Remember, the goal is not to train for a race, but to support your body's amazing journey.

The Golden Rules of Pregnancy Exercise

Before we dive into trimester-specific tips, these foundational guidelines apply from the moment you find out you’re pregnant right up until your due date:

1. Get the All-Clear First

Always talk to your GP or Obstetrician before starting or continuing an exercise routine. For tailored, professional advice, we highly recommend seeing a specialist who understands the unique mechanics of the pregnant body. The Mama Physio is an incredible resource for navigating these physical changes with confidence.

2. Listen to Your Body

Ditch the 'no pain, no gain' mindset. If something hurts, stop immediately. Pregnancy is not the time to push for personal bests; it’s the time to maintain fitness.

3. Stay Hydrated and Cool

Your core body temperature rises more easily during pregnancy. Avoid overheating by exercising in cool environments, wearing light clothing, and sipping water constantly. Dehydration is a major no-no.

4. Don't Lie Flat on Your Back (After 12 Weeks)

After the first trimester, avoid exercises where you lie flat on your back for extended periods. This position allows the weight of your uterus to compress a major vein (the Vena Cava), which can reduce blood flow to you and your baby. Modify these exercises by propping yourself up with a wedge or cushions (or maybe even a Sleepybelly Pregnancy Pillow!).

First Trimester: Managing Fatigue and Nausea (Weeks 1-12)

The first trimester is often a surprise: you might look completely normal on the outside, but inside, you feel completely exhausted! Hormonal changes are intense, and nausea can make anything but the sofa feel impossible.

  • Goal: Consistency, not intensity. Maintain your pre-pregnancy routine where possible.

  • What Works:

    • Walking: A fantastic, low-impact option.

    • Swimming: Weightless movement can be a relief.

    • Prenatal Yoga/Pilates: Ideal for developing core and pelvic floor awareness.

  • Modifications:

    • Lower the Intensity: If you were a runner, swap two runs a week for long, brisk walks.

    • Exercise When Energy is Highest: If you have an afternoon energy slump, try to squeeze in a short walk in the morning.

  • Pilates Support: If you want to maintain your strength early on, All For One specialises in pregnancy-safe Pilates and yoga that can help you manage those early symptoms.

Second Trimester: The ‘Golden Phase’ (Weeks 13-27)

Hello, energy! The nausea usually eases, and you might feel a renewed motivation to move. This is often the safest and most comfortable time to be active, but your growing bump means you need to start being mindful of your core.

  • Goal: Building and maintaining strength, stability, and flexibility.

  • What Works:

    • Strength Training: Focus on functional movements like squats, lunges, and rows, using light to moderate weights.

    • Dance or Spin Class: Great cardiovascular boost, provided you avoid movements that involve jerking or sudden changes in direction.

    • Aquanatal Classes: Water-based fitness is low-impact and supportive for your joints.

Avoiding Diastasis Recti

As your belly grows, abdominal muscles can separate. To ensure you are engaging your core correctly and avoiding "doming," Mortdale Physiotherapy can provide a professional assessment and safe exercise modifications tailored to your bump.

  • Crunches or Sit-ups: Switch to standing or side-plank variations.

  • Twisting Movements: Keep rotational exercises to a minimum.

  • Planking: Progressively modify from a full plank to a plank on your knees, or a plank against a wall, as your bump gets bigger.

Third Trimester: Slowing Down and Supporting the Body (Weeks 28+)

Your focus shifts to preparing for birth and making yourself comfortable. As your bump gets larger, your centre of gravity shifts, making you more prone to trips and falls. Joint laxity also increases due to the hormone relaxin.

  • Goal: Gentle, joint-friendly movements, improving circulation, and focusing on pelvic floor strength.

  • What Works:

    • Walking: Reduce pace and duration; break walks into smaller segments.

    • Pelvic Floor and Deep Core Work: This is crucial preparation for labour!

    • Prenatal Pilates/Barre: Excellent for maintaining posture and deep muscle stability.

The Circulation Superstars

Swollen ankles and tired legs are common third-trimester complaints. Gravity is not your friend! Ensuring good circulation is a critical part of safe exercises during pregnancy.

  • Maternity Compression Socks: If you’re active, on your feet a lot, or feeling heavy and swollen, wearing Sleepybelly Maternity Compression Socks can significantly help. They promote blood flow back up the legs, which reduces swelling (oedema) and decreases the risk of developing DVT (Deep Vein Thrombosis), a risk factor that increases with pregnancy.

  • Leg Exercises: Focus on ankle circles and heel raises throughout the day, especially if you have been sitting for a long time.

Don't Forget the Pelvic Floor

No pregnancy movement guide is complete without talking about the pelvic floor. These muscles support your bladder, uterus, and bowels. Training these muscles is vital for managing continence and recovery. For a step-by-step guide on the correct technique, visit the Continence Foundation of Australia.

  • Practice: Squeeze and lift your pelvic floor muscles as if you are trying to stop passing wind and urine simultaneously. Hold for 5–10 seconds (the 'power lift'), then do rapid 1-second squeezes (the 'flicker'). Do these regularly throughout the day, every day!

Relax and Recover

After a workout, or on days when you choose rest, make sure you look after your muscles. Stretching is vital to relieve tension, and using products that soothe tired bodies can aid recovery.  Our Sleepybelly Magnesium Body Cream is perfect for massaging into tired, aching hips and legs to help you recover faster.

When to Stop Exercising Immediately

While exercise is generally safe, there are warning signs you must never ignore. Stop exercising and seek medical advice from a professional (like those at The Mama Physio) if you experience:

  • Vaginal bleeding or fluid leakage.

  • Persistent pain in the chest, pelvis, or abdomen.

  • Sudden dizziness or feeling faint.

  • Difficulty breathing before starting to exercise.

  • Regular, painful contractions.

  • Calf pain or severe swelling.

Conclusion

Movement is powerful, mama. It helps you sleep better, manage your weight gain, improve your mood, and ultimately, it empowers you for the physical demands of birth and motherhood. By following these guidelines and listening to your amazing body, you can confidently and safely include safe exercises during pregnancy in your routine, keeping you strong right up until the day you meet your beautiful bub.  For more advice on staying active and healthy, you can explore our full Sleepybelly Guide to Pregnancy Wellness, where we share more tips to support your journey.

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How to Wash a Pregnancy Pillow Without Ruining Its Shape or Support

How to Wash a Pregnancy Pillow Without Ruining Its Shape or Support

Properly maintaining a pregnancy pillow relies on one golden rule: wash the outer cover regularly while keeping the inner cushion out of the washing machine. Soaking or machine-washing inner inserts, especially latex or memory foam, causes severe clumping, structural breakdown, and permanent shape loss, depriving you of necessary body support.

Cleaning methods vary depending on the component's material. Unzip the outer cover and wash it in cool water on a gentle cycle with a mild, fragrance-free liquid detergent. Skip hot water, high dryer heat, and fabric softeners, as these shrink technical fabrics and ruin moisture-wicking properties. While poly-fill cushions can usually be washed on a delicate front-load cycle and tumble-dried on low with dryer balls, latex or memory foam inserts must never be submerged. Instead, spot-clean foam or latex using a damp cloth with mild detergent, blot out excess moisture with a dry towel, and lay flat to air dry.

Modular pillow designs streamline laundry day by letting you unzip individual bump, back, and knee support covers for standard washing without wrestling bulky full-body inserts. Between laundry days, maintain freshness by fluffing the cushions daily, airing them out during bedsheet changes, and placing them briefly in indirect sunlight to preserve the fill's integrity.

Where Does the Dog Sleep Now? Navigating Bed-Sharing Changes Before Baby Arrives

Where Does the Dog Sleep Now? Navigating Bed-Sharing Changes Before Baby Arrives

Shifting your dog’s sleeping spot weeks before your due date is essential for protecting infant sleep safety, reducing midnight disruptions, and keeping your bedding clean for late-night feeds. Transitioning your pet early prevents them from associating the baby with losing their favorite mattress spot. Start between weeks 28 and 32 by setting up a comfortable dog bed in your room with a piece of your worn clothing. Over the following weeks, establish a clear "on your bed" command rewarded with treats, gently guiding them off the mattress without frustration. By weeks 34 to 36, practice your future nighttime movements with dim lights so your dog grows accustomed to 2 am activity while remaining on their own bed.

Clearing your mattress allows you to reclaim the physical space needed for deep, supportive side-sleeping with a dedicated bump-and-back pregnancy pillow. Once the dog has settled into their new routine, ease the baby's arrival by bringing home a worn baby wrap for your dog to sniff ahead of time, maintaining consistent feeding schedules, and offering special treats during feeds so your pet views the new arrival positively.

Graduated vs. Uniform Compression: What's the Benefit for Pregnancy?

Graduated vs. Uniform Compression: What's the Benefit for Pregnancy?

Choosing between graduated and uniform compression socks during pregnancy comes down to how each handles fluid retention. Uniform compression applies equal pressure across the entire leg to stabilize active muscles during sport, making it ill-suited for daily pregnancy swelling. In contrast, graduated compression applies its firmest pressure at the ankle and gradually eases off up the calf, actively encouraging returning blood flow and preventing fluid from pooling during long periods of sitting or standing.

For expectant mothers, knee-high graduated compression socks made from breathable bamboo offer the most practical support for heavy, aching legs. Putting them on first thing in the morning reduces daily swelling, while taking them off at night paired with proper side-sleeping support allows the body to fully restore itself for the next day.

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