Highly beneficial for menstrual discomfort sciatica mild back shoulder and neck pain pasasna is also known as the noose pose for the type of twist one does doing this pose. The aasana stretches the muscles of the back ankles and groin. It stimulates the uterus and improves digestion and beats constipation. Moreover it helps relieve lower back pain that so many of us experience during our periods. Steps to do this pose: Start by standing tall with your hands in the namaste position. Keep your feet together with your back straight. Now bend your knees and squat such that your buttocks are resting on your calves.