"The World's Largest Mouth"... He Can Fit Even This Inside

[Financial News] Isaac Johnson, a teenager from Minnesota who can open his mouth wide enough to fit an adult man's fist, is drawing public interest.
He holds the official title of 'world's largest mouth (male)' from Guinness World Records, having opened his mouth to an astonishing 10.196 cm.
Isaac's remarkable ability recently went viral again after being featured on the online video platform Hip hub Video.
In the released video, he effortlessly fits large objects such as a baseball, a soda can, an apple, and an orange into his mouth. Viewers around the world have expressed amazement, questioning whether the human body is truly capable of such feats.
Experts explain that Isaac's extraordinary ability is due to the exceptional flexibility of the ligaments around his temporomandibular joint (TMJ) and a range of motion that exceeds that of most people.
They note that when the TMJ, located in front of the ear and responsible for complex functions such as speaking and chewing, is more flexible than average, it is possible to open the mouth this wide.
However, experts warn that it is very dangerous for the average person to imitate Isaac. Habitually opening the mouth excessively can put severe strain on the TMJ, potentially leading to Temporomandibular Disorders (TMD). TMD occurs when the muscles, ligaments, or discs around the jaw are damaged.
TMD is mainly caused by various factors, including a diet of hard and tough foods, habits such as biting nails or objects, teeth grinding, psychological factors like stress and tension, and arthritis.
If you hear a clicking sound or feel pain near your jaw or in front of your ear when opening your mouth, or if you experience discomfort while chewing or speaking, you should consider the possibility of TMD. Experts advise avoiding sudden wide yawns or trying to fit large amounts of food into your mouth at once to prevent such symptoms.
hsg@fnnews.com Han Seung-gon Reporter