Gerrard Lin, a.k.a 'Ah Siao' is an ultramarathon runner, avid fundraiser and entrepreneur. His "crazy" stunts and capacity to transcend pain and stretch his limits is quite incredible. His persona 'Ah Siao' (a good hearted ex-hooligan raising money for charity) first gained traction in the 2012 Stan Chart marathon, where he dragged a 14kg tire throughout the race, raising close to $100,000 for the bone marrow doner programme. 'Ah Siao' has since gone on to accomplish feats like running 50km a day for 50 days, completing 10km with a tire on clutches, traversing 1000km from Perth to Albany, and most recently, birthing the idea for 'Relay Majulah', a relay with 200 runners to celebrate Singapore's bicentennial, in which more than a $1 mill was raised for the President's Star Charity. We discuss his journey and get a sneak peak into his mindset and routines for developing an iron mind and body. A must listen for athletes or anyone looking to challenge their limits.