Interview w/ Kirk Krack & Mandy Rae Krack of Performance Free-diving International about the sport of Freediving. We go "in-depth" and discuss the philology, history and mindset to succeed in the sport of Free-diving. Kirk Krack is Kirk, is freediving, coach and instructor trainer. He is one of the world's foremost authorities on the professional aspects of freediving education. Mandy Rae Krack is a world champion free-diver and record-holder. She set the women's world record for constant ballast by diving to a depth of 88 metres (289 ft) on one breath. (PD188 FREE AUDIO DOWNLOAD HERE)