Holding thumb in backward position for longest duration by a toddler
The record for holding the thumb in backward position for the longest duration was set by Muhammad Javedazad Kadri (born on September 24, 2018) of Rajkot, Gujarat. He folded his left thumb in the backward position, touched the hand and held it in that position for 40 seconds, at the age of 2 years, 8 months and 8 days, as confirmed on June 1, 2021.