I have good genes, but all that manual labor I did in my younger days, helped me. It didn't wear me out, or cause medical issues.Glad to hear it. You're lucky. I did a lot of manual labor in my life, on the farm and so forth. And I was a power lifter in my younger days so I doubt that helps. But you are very fortunate and not the norm. I mean Jack Lalanne swam and pulled 70 boats on his 70th birthday. That's not the norm, either. Arthritis and other stuff hit most of us.
I also go to a chiropractor once a month, that definitely helps too.