Usain Bolt push Bolt to do longer sprinting distances with the aim of making the 400 m event his primary event by 2007 or 2008. Bolt was less enthusiastic, and demanded that he feel comfortable in his sprinting. He suffered another hamstring injury in March 2006, forcing him to withdraw from the 2006 Commonwealth Games in Melbourne, and he did not return to track events until May. After his recovery, Bolt was given new training exercises to improve flexibility, and the plans to move him up to the 400 m event were put on hold. The 200 m remained Bolt's primary event
Usain Bolt climbed the UK iTunes charts to reach No. 2 on the list of Top Free Apps. Bolt's autobiography, "My Story: 9.58: Being the World's Fastest Man", was released in 2010. Bolt had previously said that the book "...should be exciting, it's my life, and I'm a cool and exciting guy." His athletics agent is PACE Sports Management. As part of his sponsorship deal with Puma, the manufacturer sends sporting equipment to his alma mater, William Knibb Memorial High School, every year. At Bolt's insistence, advertisements featuring him are filmed in Jamaica, by a Jamaican production crew, in an attempt to