BBC News : Friday, 7 April 2006, 11:30 GMT 12:30 UK
Scientists discover wearing sunglasses can help beat jet lag
Passengers on long-haul flights are being urged to wear sunglasses in a bid to reduce the effects of jet lag.
Scientists in Edinburgh have found that people can adjust their body clocks when travelling to different time zones by altering their light patterns......
....."When passengers are travelling west it's like a long day for the biological clock but when flying east, the clock tries to go into reverse which is obviously harder."
Dr Idzikowski has drawn up a jet lag checker for passengers, which tailors the amount of time and when passengers are to wear sunglasses....
"I have used this technique on a flight but you have to be aware of immigration officials as they can ask you to take them off, which weakens the outcome."