75.8 is the average for American Males
Considering he was slightly below average life span compared to the American male norm, he lived a life that most American men could only dream of, along with the physique
He was also referred to as "Mr. America"
I would say Arnold is right around the corner, had been doing steroids as young as his teenage years, but he has already outperformed the American male average sitting at 77 years
He could be an outlier though, as he's technically not American by birth, also lived and harnessed the "American Dream"
He roided himself pretty hard though.