There are things we didn't know about Usain Bolt.
In the book he explains that during the Beijing Olympics he found Chinese food to be "odd", so survived on McDonalds, mainly McNuggets, instead.
"At first I ate a box of 20 for lunch, then another for dinner. 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," he writes.
"Man, I should have gotten a gold medal for all that chowing down," he adds after estimating that during his 10 days in China he ate 100 nuggets every 24-hours.
He goes on to explain how he and his first serious girlfriend, fellow Jamaican runner Mizicann Evans, had a relatively open relationship in order to deal with Bolt's celebrity status following the Games in 2008.
"I was able to get any lady I wanted . . . I could walk into a party and take my pick," he writes.
"I would go into a club and think, 'Hmm, a'ight, which one? You . . . ? You . . . ? Oh, you! Let's do this'.
"We had one rule: If I was doing my thing with someone else and Mizzi didn't know, then she was cool. But if she found out that something had happened between me and another girl, then that person had to go."
The couple have since broken up.
More recently, after winning three gold medals at the London Olympics in 2012, he was almost disqualified and lost Jamaican relay team the gold when he tried to steal the baton used in the 4 x 100m relay.
After arguing with an official, another eventually stepped in, and ruling in Bolt's favour suggested he just take it home.