Kiren Rijiju take up Rajyavardhan Rathore 's fitness Challenge.After Union Sports Minister and Olympian Rajyavardhan Rathore kickstarted the fitness challenge drive on Twitter, MoS Kiren Rijiju too joined in, in the effort to spread awareness about staying healthy and fit.Kiren Rijiju's fitness challenge to Salman Khan, Pema Khandu & Saumya Tandon seems to have got the ball rolling on the social media.