3 things Pokemon Go must do to actually improve public health

"As you may have guessed, I’m skeptical that games like Pokemon Go will result in massive increases in physical activity at the population level.  Like any activity, there are probably people out there who will benefit greatly from it.  Hopefully they outweigh those who sign up to get active, and wind up simply spending more time on their phone instead.  Hopefully the game still exists by the time we have enough data will to sort it all out!"