Downtown San Diego is less than 20 miles/32 kilometers north of the Mexican border and about 130 miles (210 kilometers) south of Los Angeles. From Los Angeles, it’s 385 miles/620 kilometers) north to San Francisco and from there, another 90 miles/145 kilometers) northeast to Sacramento. You’d put about 190 miles/305 kilometers) on your car driving from San Francisco to Yosemite National Park, and about 600 miles/965 kilometers) driving from Los Angeles to Mount Shasta in Northern California. Needless to say, California is ideal for road trips. 
So whether you are in dire need of help or just want to have a friendly chat, don’t shy away from striking up a conversation with a total stranger; that is the best way to get a sense of Icelandic culture and society, and since all Icelandic students must learn English before they are allowed to graduate from elementary school, a language barrier will rarely, if ever, be an issue.
Most importantly, luggage should err on the safe side of the standard carry-on size -- in inches that means slightly under 22 x 14 x 9 (height x length x width), or 56 x 36 x 23 in centimeters, which is the most common allowable size across airlines. Many bags claim to be regulation size carry-ons and in fact aren't, so double check dimensions before buying to avoid forced gate check.
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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