The Popular Mechanics magazine has told how Justin Gatlin was preparing to the battle with Usain Bolt. It appears that his run was studied by the best bio mechanics from the USA. They have made the most detailed analysis pointed out the weakest points. The scientists have optimized literally...
Justin Gatlin, I think, is the main rival to Bolt. As I have understood from Bolt's inreviews, he is not "hungry" enough for this games. So I think that Gatlin is more profitable.
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