It may seem strange to think that the hips and pelvis are related to our posture, but these areas help keep the top part of our core supported. As we sit in our chairs, our hip flexors begin to shorten, and we must balance this action through hip-lengthening poses.
A deep curve in the pelvis can also contribute to poor posture as we curve the spine to compensate. It is normal for these areas to be unthought of during our busy lives until we suddenly hear a "pop", or find we cannot sit the way we used to when we were younger.
When these areas are too tight, we adjust the way that we stand, which in turn, adjusts our posture. Once you have opened your hips and pelvis, you will begin to notice how your back begins to realign itself. If experienced with yoga, you have probably already partaken in Low Lunge, or Anjaneyasana. This pose allows you control over your hips as you adjust your body for a deeper or kinder stretch. As one leg is extended behind you, the other is bent in front, and from there, you may vary the pose as you choose. Bound Angle Pose (Baddha Konasana) primarily works on your pelvis as you sit up straight, the top of your head high, and your shoulders drawn down away from the ears, bottom grounded to your mat, and legs bent to reveal your groin area.
When you breathe into your Svadhisthana (the chakra related to the pelvis), the tops of your thighs will slowly begin to reach the ground, widening your pelvic floor.