|London 2012 Olympics: Usain Bolt begins run-up to Games with February tune-up races in Jamaica|
Healthy and on a new nutrition program, Bolt plans to launch his run-up to defending his 100 and 200 metres titles at the 2012 London Games with tune-up races in Jamaica next month.
"I always run quarters (400m) before the season and I will be starting in February," Bolt said. "I think I will run at least two this season."
Some relay races will also likely be on the early program as Bolt returns to a more traditional warm up for high-powered sprint races later in the season.
An injury slowed the launch of Bolt's 2011 season until May, but previously he had always made test runs in late January or February to break up training.
"Last year was hard," Bolt said. "I started the season off a little bit injured. I had to change a lot of things."