K.P. Ranjana, 34, an advocate by profession and a martial art student, is moving towards setting a record of continuous performance of asanas for 53 hours.
Ranjana hails from the temple town of Kanchipuram, around 75 km from here.
"She has completed 48 hours of yoga performance 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 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.
He said Ranjana has been taking only fruit juice since June 19 when she started her yoga performance.