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For many travelers, sleeping while seated upright is a huge challenge, making long-haul flights an exhausting experience for those in economy-class seats.
Passengers often go to great lengths to get some inflight Zs, whether they’re buying pricey neck pillows and “foot hammocks,” or contorting themselves into awkward positions.
Most of the time these efforts — futile as they may be — are completely harmless. However one so-called flying hack making the rounds on…
