How the hell did Tony Ferguson survive that NASTY arm bar from Charles Oliveira on Saturday night at UFC 256????
Simple ... Tony says it's a combination of crazy genetics and mental fortitude.
The UFC star opened up about his jacked up arm on social media late Monday -- saying it's not as bad as it looked.
"My Arm Is Aright," Ferguson posted on IG ... "The Armbar Was Really Tight."
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"The Thought Of My Son ArmandAnthony’s Ability To Be Double Jointed In His Elbow During That Sequence & My Mental Capacity To Endure Pain Got Me Through It. # Breathe # MentalTUFness."
There have been rumblings that Ferguson could consider wrapping up his MMA career after 2 bad losses in a row ... but T-Ferg says he ain't going nowhere.
"We Are Far From Being Retired," Tony said ... while dropping a middle finger emoji to his haters.
"I Can’t Wait Til We Compete In Front Of A Big Loud Crowd Again, It’s Not The Same Without You All."
In the meantime, Ferguson says he's working on healing up his arm -- with a focus on increased blood circulation.
He even underwent some cupping therapy to help out.
Tony Ferguson -- he's tough as hell.