British Airways is offering a page on their site that offers advice on overcoming jet lag based on the specific time zones between which you are traveling (link below). It's a nice idea. You enter your starting and ending time zones, and the time at which you are traveling. It then offers suggestions for the times you should be seeking out light, dark, and food in an attempt to reset your body's internal clock and avoid jet lag. I haven't tried it out yet to see if this helps with jet lag, but I plan on using it next time I travel internationally.