jjguy05 saidYour skin keeps growing as you get older, this is a known fact. But men that lift are able to fill that excess skin with muscle mass well into their 50s and even early 60s. Just something I've noticed. And once again, the importance of lifting. Screw jogging, screw everything else. Lifting (and eating to maintain high muscle mass) is the best physical activity for men. Period.
As for the abs specifically, don't be one of those scary older guys that has a set of abs and nothing else. Be a well-rounded great-looking older guy, with chest, shoulders, back, arms, the works. And a bit of bodyfat (around 12-15%) looks great on older men. You don't need the 6-pack to show when the overall body is well-developed.
I've never heard anything about skin that keeps growing, but for maybe psoriasis, and lifting alone doesn't cut it. One of the major issues of aging is balance, especially not just for the older but the elderly. Because once you start falling you can kiss your ass goodbye. So besides for aerobic benefit, we also have to be concerned with maintaining proprioception (our sense of place in space) and balance.
I'm just now back from my swim and I think that's one of the best things an older person can do as it hits all the minor muscles as well as major ones. So in one activity you get resistance, stretching, aerobics, balance and you feel your entire body moving through the space. Plus it's low impact.
I think you are absolutely on target about older guys maintaining a higher body fat content, which is why I'm sitting here spooning my ice cream haha after having done my laps, ooops, did I admit that in public? It's Haagen Das, delicious. Fuck showing abs. I had them when younger. I doubt they're gonna get me dates now.
One of my main issues with maintaining a higher body fat percentage in aging is how a lower body fat content hollows out the face. Personal preference but I just think a fuller face looks better, especially on an older guy.