India, April 23 -- Sitting on a charpai in the courtyard of his house in Sonipat, Balwan Punia is busy watching wrestling videos on his smart phone."This is a good thing to have," he says. "I can now keep a track of my son's performance, watch how he is preparing for the Olympics."Balwan is talking about Bajrang Punia, the world's no.1 wrestler in the 65kg category, the 2018 Commonwealth and Asian Games champion, and world championship silver medallist. On Tuesday, Bajrang will kick off 2019 with his first major tournament of the year at the Asian Wrestling Championships in China.As Balwan opens a video of one of his son's fights in Germany reccently, Bajrang walks out to the courtyard in a t-shirt and tracks, and says, "I got him that phon...