Over the past 15 years, David Richman has run more than 50 triathlons, ran four marathons back-to-back, and took a solo 5,000-mile bike ride around the country.  That bike ride is also a key part of his latest book Cycle of Lives, which explores 15 different emotional journeys of people who have experienced cancer. And 100% of the book's proceeds will be donated to nonprofits focusing on cancer research.  We're chatting about those different journeys, how you can set your own goals for personal growth, the most (and least) bike-friendly cities, and some of the best cooking methods out there.