Boxers stretching jaw

[platinummatt]

What are boxers doing before that so into a match are they stretching their jaw when they do that yawning thing?

[PATO 1]

ODLH done that lots before the mayorga fight

[iron mike tyson]

maybe warming up the skin and such , cause if u do it for a few seconds ur chin warms up
if uv ever been hit when ur bodies cold it hurts twice as much.
the same when the cut man is curesing the body in the corner at the end of rounds

[realheavyhands]

stretching and strengthening there jaw muscle to prepare it to take a blow

[realheavyhands]

if you get hit in the jaw anybody can drop you

[diavoli]

It could be that they are just trying to psych their selves for the fight

[deliveryman]

They're loosening their jaw muscles, so they can take a punch better. If your jaw is all stiff, it's going to hurt a lot more.

[cold]

It equalizes the pressure in the sinus and ears similar to when you want to make your ear "pop" so you can hear when at altitude.

[The Golden Boy]

It stretches the skin on your face making it less succeptible to cuts.