When you cross various time zones, you may eat more or crave certain types of food. Medical research has revealed that traveling through different time zones disrupts hormones that ordinarily suppress appetite.
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Medical research has revealed that traveling through different time zones disrupts hormones that ordinarily suppress appetite. Adding to this can be a disruption of sleeping patterns as a change in sleeping habits increases cortisol levels, making you more hungry.
Drink plenty of water before, during and after your flight to counteract the effects of dry cabin air. Dehydration can make jet lag symptoms worse. Avoid alcohol and caffeine, as these can dehydrate you and affect your sleep. Try to sleep on the plane if it's nighttime at your destination.
Celebrations and vacations can involve eating foods higher in carbs and salt than your normal diet, and both of these lead to water retention, she said. We store carbs as glycogen in our body, and for each gram of glycogen we retain several grams of water right along with it, Mockler said.
All those pounds are mostly water weight. The reason for the five-pound “gain” is water retention. What is this? Not only do certain rich foods leave you retaining water, but you also have the physical weight of the excess food traveling through your system for at least 48 hours or so.