Kim Krebs is a land speed motorcyclist, and a speed freak since the age of five.

Meanwhile, Dave is trying to slow down. He's taken up Walking Basketball.

Plus, what you need to know if you're considering stem cell treatment for a sport or exercise injury.

Guests:

Kim Krebs - land speed motorcyclist

David, Theresa, Frank, Maureen - Walking Basketballers

Warren Roche - Walking Basketball facilitator and coach

Kyle McMullen - Inclusion Officer Basketball Victoria

Sean Harrop - senior coach Shepparton Football Netball Club, had stem cell treatment in his playing days

Joanne Kurtzburg - Director of the Marcus Center for Cellular Cures, School of Medicine, Duke University