You're an athlete competing at rowing until 22 then you become blind, but that doesn't stop you, because you take medals at the next commonwealth games, become an adventurer and race across the desert and across the South Pole then a few weeks before you're to be married you fall two stories out a window and become paralysed lying there with a fractured skull and spend the next 8 months fighting to survive. And that doesn't stop you, because you then begin an EPIC journey to cure paralysis. That is the story of Mark Pollock. What would you do in those situations?