Dimity and Sarah welcome author Margaret Webb on the show to talk about her book Older Faster Stronger. Margaret tells how, at age 50, she morphed from an overweight, middle-of-the-pack runner who occasionally smoked to being as fit as she was as a 20-year-old varsity collegiate athlete. She shares her three secrets of speed, and talks about the importance of becoming her own champion. Find out how a fox and dolphin pop up in the World Masters half-marathon race Margaret ran in Italy.