This document provides instructions and information about four yoga asanas: 1. Pavanmuktasana stretches the neck and back, improves digestion and blood circulation, and relieves constipation. 2. Naukasana helps reduce belly fat, improves digestion, and strengthens the abdominal muscles and other body parts. 3. Setu Bandhasana strengthens the legs, back, neck and chest, reduces stress, and improves digestion and blood circulation. 4. Halasana stretches the hamstrings and calves, massages the abdominal organs, and improves digestion when practiced under the guidance of a yoga instructor.