While yoga is generally safe, certain categories of movement can put undue pressure on the uterus, restrict blood flow, or risk abdominal separation. Here is a breakdown of the primary poses and movements to avoid.
Deep Twists and Abdominal Compression
In a standard yoga practice, we often use "closed twists" where the torso turns toward a bent leg. This creates a "ringing out" sensation in the abdomen. During pregnancy, this can compress the uterus and limit the space for the growing baby.
Instead of deep, closed twists, we recommend "open twists." This means twisting away from the bent leg or simply moving the shoulders and upper back while keeping the belly facing forward. This maintains spinal mobility without the internal pressure.
Poses Lying Flat on the Belly
As your pregnancy progresses, poses that require lying face-down become uncomfortable and eventually impossible. Poses like Cobra (Bhujangasana), Locust (Salabhasana), and Bow (Dhanurasana) put direct pressure on the placenta and the developing fetus.
Most practitioners choose to stop these poses as soon as they have a visible "bump," but many find it helpful to transition to alternatives earlier. You can often replicate the chest-opening benefits of these poses by using a seated or kneeling position.
Lying Flat on the Back (Supine Poses)
After the first trimester, lying flat on your back for extended periods can lead to a condition known as supine hypotensive syndrome. This occurs when the weight of the uterus presses on the inferior vena cava, a major vein that returns blood to the heart.
This pressure can cause dizziness, shortness of breath, or nausea. In a yoga setting, this most often affects the final relaxation pose, Savasana.
Myth: You must stop lying on your back the moment you find out you are pregnant.
Fact: Most healthcare providers suggest avoiding supine positions after the 16th to 20th week, but you should always let your personal comfort and your doctor's advice be your guide.
To modify, you can use bolsters to prop up your upper body at a 45-degree angle or simply lie on your left side. Lying on the left side is often preferred as it may support optimal blood flow to the placenta.
Intense Backbends and Abdominal Stretching
Deep backbends like Full Wheel (Urdhva Dhanurasana) create an intense stretch across the front of the abdomen. During pregnancy, the abdominal muscles (the rectus abdominis) are already being stretched to their limit.
Adding an intense backbend can increase the risk of diastasis recti, which is the separation of the abdominal muscles. While gentle backbends like Cow Pose are usually fine, avoid anything that creates a "doming" or "coning" effect in your midsection.
Inversions and Balancing Poses
Inversions, where the head is below the heart, can be tricky. If you had a dedicated headstand or handstand practice before pregnancy, you might feel comfortable continuing for a while. However, the risk of falling increases as your center of gravity changes.
Furthermore, inversions can sometimes cause heartburn or dizziness, which are already common during pregnancy. If you choose to practice inversions, using a wall for support is a smart way to ensure stability.
Hot Yoga and Overheating
Practicing in a room heated to 100°F or more is generally discouraged during pregnancy. Overheating, especially in the first trimester, has been linked to developmental concerns. It can also lead to dehydration and fainting.
Stick to classes held at a comfortable room temperature. If you find yourself sweating excessively or feeling lightheaded, it is a clear sign to take a break, hydrate, and move to a cooler area.
