India's Ironman Record Breakers

The Ironman Triathlon, considered the toughest single day sporting event in the world is where two Indians have recently set unique records. Major General Vikram Dogra became the first serving Indian Army officer to complete the grueling task. While, 52 year old Anju Khosla became the oldest Indian woman to successfully complete an Ironman. Why did they do it, what was their motivation and how difficult were the back to back events of a 3.8 km swim, 180km cycling and 42.2 marathon.