Celebrity bodybuilding expert Kris Gethin who has trained Bollywood stars such as Hrithik Roshan and John Abraham, shares some truly inspirational stories in ’The Bodybuilding.com: Guide to Your Best Body’. Most of us have excuses for not working out. Once you read Captain Ahab AKA Errol Hannigan's story, all your excuses will seem like the lamest ones in the world. Here’s an excerpt from his book: In 2002 Errol Hannigan slipped on some grease on the floor and heard a pop in his knee. The injury was bad but not terrible, and he went in for arthroscopic surgery to have it repaired.