Pavanamuktasana activates the flow of prana in the manipura (solar plexus) chakra. Activation of this chakra helps increase self-esteem, motivation and joy. It is the seat of spiritual power and responsible for generating willpower and feelings of vitality.
On a physical level, the manipura chakra also helps control the digestive processes in the body. By massaging the abdominal organs, tension in the lower back is released and gas that has been trapped in the belly is freed. This asana greatly improves digestion and is an excellent pose for beginners as it is easy to perform.