I have enjoyed decades of golf so far with firm glutes and firm abs as an unitended benefit :)
I'm always tickled when I read these stories. I'm chasing an albatross personally to complete my scorecard (got a hole-in-one the 1st decade of playing).
https://www.thevillagesdailysun.com/news/in_todays_daily_sun...
https://www.tri247.com/triathlon-news/age-group/ironman-kona...
The key is to start early and build up enough strength and fitness to sustain you for awhile after the inevitable, irreversible decline sets in around age 70.
I know golf has a seniors tour, but always laughed at the thought of the NFL doing that (oh the humanity!) :p
I feel like that analogy is lacking. Nevertheless, it's unlike any other sport I've played, like ice hockey, for example, which is more like driving in NYC.
So far my only BJJ-caused back or shoulder injuries were from early on when I was either too inflexible (and so it was easy to push it too far), or too stupid to tap (hadn't realized what "too far" was). Take it slow, find good training partners, listen to your body, and take up complementary activities (some strength training, flexibility things like yoga, core training especially for the back).
I also do judo once a week, and that’s lots of fun but a bit scary compared to bjj. I probably won’t continue doing that when I get old, not sparring at least.
A long walk on its own versus... a long walk where you've clicked the record button on Stava is for some reason a completely different experience. One is idle, meandering, and boring the other is (somehow psychologically) building something and fun.
For instance, I care little about the measurements of any given run or walk, I rarely even look at them when I'm done, but just the recording itself on my Apple Watch subtly motivates me to work harder and go longer. It becomes more of a 'workout' than a passive activity.
Anything <= 20 minutes away, I ride my bicycle. And yeah, I live in a suburb. The grocery store is about a 15 minute ride away, a bit uphill.
Taken from this point of view, cycling is actually multi-tasking: you're getting somewhere and getting your daily exercise. Cars don't actually save you time when it comes to these sorts of trips because they're forcing you to spend extra time explicitly exercising.