But there's an exception to this rule: If you're packing something really valuable, you may want to consider purchasing excess valuation (EV) from your airline. It's not insurance per se, but it increases the airline's liability limit. You'll likely have to ask your airline for it directly; carriers don't often advertise EV, and many travelers have never even heard of it. You can sometimes buy baggage insurance from car-rental companies and travel agencies as well.

It’s a far cry from doctors’ typical jet lag tips ― like avoiding caffeine and alcohol before you try to sleep, slowly adjusting your sleep schedule to a new time zone or even using small doses of melatonin to help fall asleep when your body typically wouldn’t want to, the study’s author Cristina Ruscitto, a researcher in the Department of Psychology at the University of Surrey (and former long-haul air crew member), told The Huffington Post. The idea is, she said, “that you readjust by eating in line with local time ― not just sleeping on local time.” This revelation could be an easy fix for jet lagged travelers everywhere. 

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