For years, health and outdoor advocates have worried that computer games, tablets, smartphones and TVs have kept too many kids indoors and sedentary. Those complaints flew out the window earlier this month when Pokémon Go, a mobile game app, became a worldwide sensation. For the first time, gamers can’t just sit indoors in front of a screen;Pokémon Go drives them off their couches and into the world – parks, public gardens, communities and neighborhoods – to find and capturePokémon creatures.

Instead of eye and brain strain, Pokémon Go’ers are getting sore legs as they walk for miles in search of the Pikachu…