For some reason, I can remember the very first time I came across the term 'jet lag'. It was in the pages of a book and it stuck because the main character made her business thrive by making sure her prospective overseas business partners did not have a chance to get over their jetlag before she hit them with all her ideas and so they were often too tired to counter her words and say no to her. This 'strategy' actually worked for her all time, no way it wouldn't have stuck. Apparently, jet lag occurs with rapid travel across time zones, resulting in a disruption between the timing of body’s "internal clock" (circadian rhythms) and that of the external physical environment. Basically, it is some sort of temporary sleep disorder that occurs after a long flight. Often characterized by confusion, lack of awareness, fatigue, insomnia, indigestion and loss of appetite, it is no surprise that the author of that book figured it would make a good natural tool to...