Matt Hall was seconds away from being killed by a heat-seeking missile in Iraq and survived several other near-death experiences. He left the air force to join the thrilling Red Bull Air Race, where he’s just been crowned world champion.

Sam Greco once coached UFC fighter Jimmy Crute for five rounds while suffering a heart attack.

Olivia Vivian first gambled with money as an 11-year-old. She was swept up by a family obsession that has caused generations of loss and anger.

Genevieve Gregson grew up in a house where Froot Loops were banned and her life was meticulously managed. Two huge events threw her life into chaos and forced her to confront her fears.

A year after the heartbreak of missing out on Rio 2016, Emma Nedov snapped her Achilles and retired from artistic gymnastics. At 23, she's considered old for the sport now, but Nedov is back for one last tilt at the Olympics.

Genevieve Gregson grew up in a house where Froot Loops were banned and her life was meticulously managed. Two huge events threw her life into chaos and forced her to confront her fears.

Corey 'Homicide' Williams grew up in the Bronx when it was the 'wild, wild west'. He watched people lose a lot more than just money gambling on the streets.

Jeff Horn doesn’t usually watch back his fight losses. He made an exception this time, after his loss to Michael Zerafa, motivated by criticism of the role played by his trainer Glenn Rushton.