The ancient Shastras cite "all yoga starts at the navel point."

Once, a young student asked his teacher how far he must travel to find enlightenment and the true path of the Self. The teacher spread his fingers wide and said, "You must travel the distance from the thumb to the tip of the little finger. If you place the spread hand on your stomach with the little finger at the Navel Point, then the thumb stretches to the heart center. This is the mystical path consciousness must ascend."