You're doing great, George!
Although I'm only a kid of 60 years old, I injured my back in the shipyards when I was about 30 years old.
It has been known to raise a fuss now and then, but much less since I've been taking SAM-e.
I take a morning walk most everyday... Rain or shine. I might skip it during a storm, though.
When I walk, I don't run or jog!
I walk like I have somewhere I need to be (walking with purpose).
During the summer, I might swim a bit too.
Walking and swimming are excellent exercises that don't add strain to your back but do wonders for your health.
As with any new exercise routine, start slow and add distance to your walks (or swims) as time goes by.
I'm sure your cardiologist would applaud these exercises as well!
Hopefully, you can make him a believer in the FTS lifestyle so he'll pass it on to other patients!