This week’s inspirational guest is Catriona Riddell who donated one of her kidneys to a complete stranger. Just a couple of months after surgery, Catriona was back at her local parkrun as Tail Walker. She tells us why she decided to donate one of her organs and wonders whether or not that kidney is still doing parkrun! We also hear part two of Vassos’ interview with super physio Paul Holbrough and Helen takes an unlikely win in the stats quiz ...thanks to a bit of old fashioned cheating.