How to breath to maximise oxygen intake

On this edition of the Ask Coach Parry podcast, I’m Brad Brown, Lindsey Parry with us once again. Lindsey, its another double headed question today. The first one comes from Olivia Wallace-Smith; Olivia wanted to know about breathing techniques. Then Vusi Rajuli said good day thanks for the podcast; I would like to know what is the best method of breathing while running and what’s the relationship between my running and breathing. Finally what exactly is VO2 max, and how does it relate to my performance. I’m not scientist, but I would say breathing is important?