Damo & Jez talk to Aussie 800m record holder Catriona Bisset while she is in Doha for the World Athletics Champs.  They get the inside track on her meteoric rise & some of the challenges she's overcome on the way.

The boys have their usual chat & introduce a fascinating new beers with the physiologist series, in this episode they talk to Andy Blow about the science of hydration, perfect timing for those hot & sweaty summer runs.