The fully developed vertebrae (posture) and muscles/muscle mass are obvious. At age 54, he is showing no signs of skinny fat (cellulite, thin fat, loose skin, saggy skin, crepey skin, normal weight obesity) anywhere on his body. Although his muscle definition has faded somewhat as he has aged.
One pound of muscle burns six calories per day, but one pound of skinny fat/fat only burns two to three. Which directly affects metabolism (the more skinny fat and fat, the slower the metabolism). Having a strong metabolism because of all that muscle and muscle mass, no less, is an advantage that a fully developed BT1 offers, including aging gracefully.
Diet, exercise, lifestyle, metabolic rate (BMR), and BMI matter. But so do genes/genetics/DNA. It will be interesting to see as the years pass how well Jason Statham successfully maintains his thoroughly muscular physique/figure.
