No Canadian has seen greater Olympic glory than Marnie McBean. But the rowing legend says one of her most memorable moments came at the Sydney games, where she was injured out of competition. The support she got from her fellow athletes and from Team Canada, changed her outlook dramatically, and made the Olympic movement the enduring focus of Marnie McBean's life.

Canada's Chef du Mission for the Tokyo Olympics comes into studio to share her understanding of Olympic sport culture with host Anastasia Bucsis. Beyond the individual insights she has picked up from years of mentoring, McBean has invested serious thought in the areas where the Olympics struggle. How do host cities justify the cost of building so much infrastructure? What is the work that still needs to be done to keep athletes safely away from steroid use? Are we any nearer clarity in the shifting sands of gender and competition?

The chat raises more questions than answers, but the questions matter if sustainable Olympic games are the goal.