When a body is starving for sugar, ketones take over and help breakdown the next best source of energy: stored fat. The body produces ketones during starvation or fasting and also during long bouts of physical training. When your muscles are sore after strenuous exercise - ketones cause the pain.
Khaled Hosseini published The Kite Runner in 2003. By the end of 2005, it was a bestseller in the United States. It seemed readers couldn't get enough Hosseini's story about the troubled friendship between two Afghan boys.
All of the novel's main characters, like real humans, live their present lives in specific ways because of their past. Amir--The novel is based upon Amir's view of his past action--betraying Hassan--and we wouldn't have the main plot without Amir's... The universal theme of The Kite Runner is, of course, redemption.