We have all been there—sitting on the edge of the sofa during an IPL final or a World Cup match, heart racing, shouting at the TV when a wicket falls. For most of us in India, sports are an emotional rollercoaster. We watch as "viewers," meaning we react to what happens on the screen. If our team wins, we are happy; if they lose, our whole mood for the day is ruined. But there is another...