From Dublin's Spire to The Shard in London, Ryan Davin has ran, rowed and cycled his way into the Guinness World Book of Records for a remarkable 400 mile triathlon across the Irish Sea. Ryan talks about his overwhelming capacity to push himself to the absolute limit - even to the point of hallucinating in the middle of the ocean with 'Dirty Sanchez'' Matt Pritchard. This week, it's time to grab life by the cojones...

...that means testicles