Mysuru: Vignesh, a student of Shikshkarni Central School, who recently participated in the 7th Asian Yoga sports championship held at Singapore, has bagged two silver medals and a certificate.   Son of M. Kumara and D.S. Nagalakshmi, this thirteen-year-old lad is practicing yoga since childhood at Mysuru Vivekananda Yoga and Research Institute.   He has…