International Bodybuilder Kris Gethinf is the reason why Bollywood actors Hrithik Roshan and John Abraham appear so fit. Gethin has his own fitness website to train people in the right way. I didn't choose body-building. It chose me. I used to go to the rehab for a back injury. But when I started weight-training the pain was alleviated. I started feeling better Gethin said. He has also written various books on his fitness journey. His latest book 'The Transformer' published by Om Books International sums up his journey from being a nobody to a sort-after name in the fitness domain.