It didn't do him any harm..he smashed three world records
The Jamaican revealed in his soon-to-be released autobiography, Faster than Lightning, his passion started with a box of 20, yes 20, of the golden chicken treats, but with his training going into overdrive, he soon needed far more, up to 100 a day, and even turned to an apple pie to take the edge off.
“At first I ate a box of 20 for lunch, then another for dinner,” he wrote. “The next day I had two boxes for breakfast, one for lunch and then another couple in the evening. I even grabbed some fries and an apple pie to go with it.”
Of course, the Jamaican Milkshakes you ingest through a hypodermic needle don't slow you down, either.
By the way, my reading of David Wallechinsky's endlessly informative Complete Book of the Olympics suggests that nobody gets into severe auto crashes more than Olympic gold medalists. Hopefully, modern high end German safety technology will help Usain walk away from his next several wrecks as well.