I was blue collar and pretty active after work as well. Then I made the mistake of sitting on my butt for a couple of years. Now I have hardening of the arteries aka atherosclerosis in my legs.
In my humble opinion you can reverse it by gradually increasing walking routine. My own heart must have grown new arteries because at age 55 I would get chest pains after eating a good meal. Do not get those anymore, but I also do not eat a 10 oz steak in one sitting anymore.