This week’s episode is with one of the greatest ultra endurance athletes of our time - Sean Conway. Just a few of his highlights being, Sean recently breaking the world record for completing 105 Ironmans in 105 days, he was the first person to swim the length of Britain, is the only person to have completed a length of Britain triathlon, has completed the world's longest triathlon of 4200 miles and has the world record for the fastest self supported cycle across Europe.  We tap into his unforgiving mindset, that allows him to push through the extreme physical challenges he undertakes and we question whether his biology is unique in order for him to complete these challenges, or is it possible for anyone to achieve them.