The 54-year-old former heavyweight boxing champion stripped off his shirt on the national TV show Good Morning America to prove his point on Tuesday.
"This is where it’s at, man! This is where it's at. This is where it’s at, brother!" Tyson told host TJ Holmes, as he revealed his chest.
Tyson takes on Jones in an exhibition fight in California on Sunday (NZT) and said he didn't lack motivation to get back into fighting shape with plenty of encouragement from home.