Sleepless in Lisbon

The inconvenient if not altogether unexpected part of traveling abroad is the jet lag.  This is of course news to no one, and should be regarded as not newsworthy.  But it does happen all the time, and is therefore an integral part of the travel experience.  Right now, for example, I am sitting in a cookie-cutter bar on the first floor of a cookie-cutter Ibis hotel in Lisbon, my beautiful wife looking aimlessly at a bar tv screen, our beer nearly empty, while spicy peanuts fill our cheeks.  Oh, and it is 2:40 AM local time.  We have a 7;30AM wake up call.  Why are we here?