'Eventually we are able to take the essence of the apanic pattern, that of grounding, and draw it up along the central axis of the body into the roots of our navel. At the same time we are able to connect with the pranic pattern, the flowering centered at the core of the heart, and we can press the pattern down into the roots of the navel. We learn to consciously join prana and apana where they meet, causing an ignition at the plane of the navel, which creates an experience of intense inner heat and ecstasy. Some consider this to be the initiation into the inner world of yoga practice. This is why the patron saint of Hatha Yoga, Ganesa, the elephant-headed god who symbolizes the awakened Kundalini, has a big belly. In fact, as can be seen in illustrations of Ganesa, his entire body represents the process of Hatha Yoga.
He has a huge belly and wrapped around his navel is a cobra, and right at the navel point the heads of the multi-headed cobra are opening and lifting, symbolizing the joining of prana with apana.
Ganesa's lower belly is scooped out, way down underneath the cobra, in order to pull the apana up into the roots of the navel, and his belly has expanded so much that is as if a flower – the pranic pattern – had initiated its bloom at the base of the navel as well.
Ganesa's hips are extremly open, and he is extraordinary grounded and solid, indicating that the rooting apana pattern is well established.
His elephant head has an exceptionally long nose – for the practice of pranayama – and his large ears facilitate listening so that he can hear pure sound in the deepest meditation, the most profound samadhi.
Ganesa is is also known to have a fantastic sense of humour and is considered to be the intelligence itself.
His extreme bodily form is a lesson in not taking the metaphors that describe the yogic process too literally. After all, who really has an elephant head?'
~ stolen from Richard Freeman 'The Mirror of Yoga‘