What is physiologically different about a boxer or fighter that 'has a good chin' (i.e., can take a punch and not get knocked out)? - Quora
Is it possible for a weak-chinned boxer like Amir Khan to strengthen his chin to a granite chin level? - Quora
![Boxer with broken jaw split in two tries to talk but only half mouth moves after fighting FIVE ROUNDS with horror injury | The US Sun Boxer with broken jaw split in two tries to talk but only half mouth moves after fighting FIVE ROUNDS with horror injury | The US Sun](https://www.the-sun.com/wp-content/uploads/sites/6/2020/10/sport-preview-Benjamin-Hussain-muzzed.jpg?strip=all&quality=100&w=1500&h=1000&crop=1)