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Sit down before you read this.
Seriously, before you hurt yourself or someone else.
That's the message in a series of public service announcements from the American Academy of Orthopaedic Surgeons. The "Digital Deadwalkers" campaign aims to raise awareness about the dangers of distracted walking, such as charging down sidewalks or across intersections while staring at smartphones.
While such zombie-like walkers aren't trying to eat brains, they can still...