Harvard University

Sure, hundreds of millions of players were wandering around, eyes glued to smartphones, putting their energies into "catching" imaginary creatures in the augmented reality game.

And yes, okay, maybe the quest to "catch 'em all" meant they occasionally strayed into less-than-appropriate locations. Like Holocaust museums.

To test it, she divided 84 female room attendants (hotel maids) from seven different hotels, into one of two groups.

In a study about "health and happiness in the workplace," the informed group received information about the benefits of exercise, and were informed that their housekeeping work satisfied the CDC's recommendations for an active lifestyle (at least 30 minutes of physical exercise per day).