<Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (August 2014) (Learn how and when to remove this template message) </Td> </Tr> <P> In combat sports such as boxing, kickboxing and mixed martial arts, a fighter's chin is a figurative term that refers to an ability to tolerate physical trauma to the chin or jaw without being knocked unconscious . The fictional Rocky Balboa character of the Rocky franchise epitomizes the concept of a boxer with a granite chin . </P> <P> A fighter with a "good chin" refers to a fighter with the ability to absorb blows to the chin or jaw without being struck unconscious, which can also be called a "granite chin", an "iron chin" or similar . Generally, the jaw portion of the skull, and specifically the point of the chin, is the area most vulnerable to a knock - out blow and therefore having an exceptional tolerance to punishment in this area is a great advantage to a fighter . </P> <P> A "bad chin", "suspect chin", or "glass jaw" refers to fighters with limited ability to absorb punishment to the chin or jaw . Many clubfighters and journeymen may have glass chins, although it may depend on weight class or sometimes legs . Some boxing experts, such as Teddy Atlas, believe it to be a mindframe . Additionally, some fighters have been known to have better chins as a result of moving up to a higher weight class . One example of this is Miguel Cotto, who was seen as having a relatively weak chin at light welterweight but was harder to hurt once he moved up to welterweight . </P>

What does it mean to have a strong chin