Jim Fixx, a bigtime cardio nut and author the the bestselling book " The Complete Book of Running", died of a massive heart attack caused by arterial blockage. He had a genetic predisposition to the accumulation of arterial plaque.
I remember when he died, i was young but i do remember it.
It shocked the world because he was seen as the symbol of health and fitness.
A good friend of mine died in his early 20's due to a genetic defect. He was a Marine and in incredible shape.
Back to the discussion, to get really good at shoveling snow, you need to shovel a lot of snow.
When i was at my strongest i used to help my friend wire houses on the weekends, it paid great. We used to have to pull wires/cables through conduits in the slabs and throughout the house. My friend was about 160 pounds and never lifted a weight in his life, but when it came to pulling cables through conduits, he made me look weak. That's what i consider functional strength.
It was embarrassing when i could barely get the cable to move and my friend came over and yanked 3 feet at a time. His hands were like vices.
