In this episode, Rob chats to Diana Nyad, who at the age of 64 became the first person to ever complete the treacherous 110-mile swim from Cuba to Florida without the use of a shark cage.

Diana reveals why, after an unsuccessful attempt in 1978, she decided to revisit the swim 30 years later – and how, after continuous failed attempts after that, she found the will to keep on trying until she finally succeeded in 2013.

Sharing anecdotes from her five gruelling quests, Diana talks about how she endured everything from a near-death encounter with a deadly box jellyfish, to a night spent repeatedly vomiting into her protective swimming mask. She also chats to Rob about pain – and why she believes all humans experience it differently – as well as why we can all become better endurance athletes as we age...

Listen to all episodes and discover more about How to Be Superhuman at http://redbull.com/superhuman.