The 'IronGran': Oldest British woman to complete an IronMan looks to keep moving

Edwina Brocklesby, 78, is a person that once you have met, you'll never forget. Nicknamed the 'IronGran,' Brocklesby is the oldest British woman to have completed an Ironman -- which is the world's toughest triathlon challenge comprising of a 2.4-mile swim, a 112-mile bike ride, and a full 26.2-mile marathon.