Longest duration of backward bending of thumb by a teen
The record for the backward bending of the thumb for the longest duration was set by Sandeep V. (born on October 17, 2005) of Chennai, Tamil Nādu. He held his thumb bending it backward for 40 minutes and 23 seconds at the age of 16 years, 7 months and 6 days, as confirmed on May 23, 2022.