If you are old and you end up with a body like that and people are aware of it because you have been flaunting it, you are either a desperate gay or you got a serious vanity of narcissistic issue.
Just aim to be fit, flat tummy, slim look, firm butt and taunt limbs and you are good to go. Do a marathon or ride a bike for 160km to prove a point. And enjoy life.
Sometimes attend club poolside parties or do couple of laps in hotel gym and you see these guys. You feel sorry for them. This is no longer fitness. This is dressing up an old chicken.