What Causes Jet Lag?
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    So, what causes jet lag? Let’s say that you just landed at the airport from a long flight across the world. You feel perfectly fine, exhilarated even. You’re finally home after that long business trip, and your family gives you a very warm welcome. After sharing stories and giving gifts to the kids, you go off to bed, vaguely noticing how tired you have suddenly become. You wake up the next day, six hours after you were supposed to wake up, and with a throbbing headache. You miss your first day at work back from abroad. You have been hit by the bane of every traveler – jet lag.