Thousands of people performed yoga across Chennai on Tuesday to mark the second International Yoga Day.Some schools asked students to reach early on for the yoga exercises.At the sprawling YMCA grounds, thousands performed yoga for two hours. The event was organised by Pyramid Spiritual Societies Movement.Officers of the Indian Navy celebrated the International Yoga Day by performing yoga on INS Adyar.According to a defence official, a large number of employees at the Ordnance Cloth Factory here also did yoga.At the University of Madras, 34-year-old K.P. Ranjana, an advocate and a martial art student, is progressing steadily to set a world record of continuous yoga performance for 53 hours."She has completed 48 hours of yoga and will soon break the world record set by Uttam Muktan of Nepal who performed yoga for 50 hours and 15 minutes in December 2015," Ramesh Rishi of the Mahamaharishi Foundation Charitable Trust Mahayogam told IANS.He said Ranjana was expected to complete her feat at 3 p.m. on Tuesday."She performs around 600 asanas with five minute rest after every hour of yoga exercise," he said.