Sleep problems tend to be more common when people travel from west to east, as it is harder to go ahead than to delay sleep time.

But it's not the only cause of tossing and turning for travelers. Driving just one hundred miles a day, staying up too late while being entertained by business assodates, adjusting to new surroundings, and other usual pitfalls of the business world cut into sleep time.

'However, the uneasiness of jet lag is compounded by some physical problems due to being restricted in a plane for hours. 'The dry atmosphere in the cabin can lead to headaches, dry skin, dehydration and the right conditions for easily spread colds and flu.