Longest duration to hold thumb finger in backward position
The record for holding the thumb finger in backward position for the longest duration was set by Joel Jose Manadan (born on March 31, 2013) of Paravur Taluk, Kerala. He held his thumb finger in the backward position for 21 minutes and 14 seconds at the age of 8 years, 2 months and 14 days, as confirmed on June 14, 2021.